--- chromium-70.0.3528.4/base/callback_internal.cc.gcc8	2018-08-21 11:49:22.000000000 +0200
+++ chromium-70.0.3528.4/base/callback_internal.cc	2018-08-22 03:08:10.825006053 +0200
@@ -21,6 +21,7 @@
       return true;
   }
   NOTREACHED();
+  return false;
 }
 
 }  // namespace
--- chromium-70.0.3528.4/base/bind_internal.h.gcc8	2018-08-21 11:49:22.000000000 +0200
+++ chromium-70.0.3528.4/base/bind_internal.h	2018-08-22 03:12:22.454435946 +0200
@@ -749,6 +749,7 @@
           functor, std::get<indices>(bound_args)...);
   }
   NOTREACHED();
+  return false;
 }
 
 // Relays |base| to corresponding CallbackCancellationTraits<>::Run(). Returns
--- chromium-70.0.3528.4/components/viz/common/gl_helper.cc.gcc8	2018-08-21 11:49:36.000000000 +0200
+++ chromium-70.0.3528.4/components/viz/common/gl_helper.cc	2018-08-22 20:20:05.439042583 +0200
@@ -476,7 +476,7 @@
 }
 
 bool GLHelper::CopyTextureToImpl::IsBGRAReadbackSupported() {
-  if (bgra_support_ == BGRA_PREFERENCE_UNKNOWN) {
+  if (bgra_support_ == BGRA_SUPPORT_UNKNOWN) {
     bgra_support_ = BGRA_NOT_SUPPORTED;
     if (auto* extensions = gl_->GetString(GL_EXTENSIONS)) {
       const std::string extensions_string =
--- chromium-70.0.3528.4/components/autofill/core/browser/webdata/autofill_wallet_metadata_sync_bridge.cc.gcc8	2018-08-21 11:49:32.000000000 +0200
+++ chromium-70.0.3528.4/components/autofill/core/browser/webdata/autofill_wallet_metadata_sync_bridge.cc	2018-08-22 20:46:18.826814588 +0200
@@ -46,8 +46,9 @@ std::string GetClientTagForSpecificsId(W
       return "card-" + specifics_id;
     case WalletMetadataSpecifics::UNKNOWN:
       NOTREACHED();
-      return "";
+      break;
   }
+  return "";
 }
 
 // Returns the wallet metadata specifics id for the specified |metadata_id|.
@@ -248,8 +249,9 @@ bool AddServerMetadata(AutofillTable* ta
       return table->AddServerCardMetadata(metadata);
     case WalletMetadataSpecifics::UNKNOWN:
       NOTREACHED();
-      return false;
+      break;
   }
+  return false;
 }
 
 bool RemoveServerMetadata(AutofillTable* table,
@@ -262,8 +264,9 @@ bool RemoveServerMetadata(AutofillTable*
       return table->RemoveServerCardMetadata(id);
     case WalletMetadataSpecifics::UNKNOWN:
       NOTREACHED();
-      return false;
+      break;
   }
+  return false;
 }
 
 bool UpdateServerMetadata(AutofillTable* table,
--- chromium-70.0.3528.4/components/autofill/core/browser/webdata/autofill_sync_bridge_util.cc.gcc8	2018-08-21 11:49:32.000000000 +0200
+++ chromium-70.0.3528.4/components/autofill/core/browser/webdata/autofill_sync_bridge_util.cc	2018-08-22 20:50:21.920501135 +0200
@@ -30,6 +30,7 @@ sync_pb::WalletMaskedCreditCard::WalletC
     case CreditCard::EXPIRED:
       return sync_pb::WalletMaskedCreditCard::EXPIRED;
   }
+  return sync_pb::WalletMaskedCreditCard::WalletCardStatus(0);
 }
 
 CreditCard::ServerStatus ServerToLocalStatus(
@@ -40,6 +41,7 @@ CreditCard::ServerStatus ServerToLocalSt
     case sync_pb::WalletMaskedCreditCard::EXPIRED:
       return CreditCard::EXPIRED;
   }
+  return CreditCard::ServerStatus(0);
 }
 
 sync_pb::WalletMaskedCreditCard::WalletCardType WalletCardTypeFromCardNetwork(
@@ -82,8 +84,9 @@ const char* CardNetworkFromWalletCardTyp
     case sync_pb::WalletMaskedCreditCard::SOLO:
     case sync_pb::WalletMaskedCreditCard::SWITCH:
     case sync_pb::WalletMaskedCreditCard::UNKNOWN:
-      return kGenericCard;
+      break;
   }
+  return kGenericCard;
 }
 
 sync_pb::WalletMaskedCreditCard::WalletCardClass WalletCardClassFromCardType(
@@ -98,6 +101,7 @@ sync_pb::WalletMaskedCreditCard::WalletC
     case CreditCard::CARD_TYPE_UNKNOWN:
       return sync_pb::WalletMaskedCreditCard::UNKNOWN_CARD_CLASS;
   }
+  return sync_pb::WalletMaskedCreditCard::WalletCardClass(0);
 }
 
 CreditCard::CardType CardTypeFromWalletCardClass(
@@ -110,8 +114,9 @@ CreditCard::CardType CardTypeFromWalletC
     case sync_pb::WalletMaskedCreditCard::PREPAID:
       return CreditCard::CARD_TYPE_PREPAID;
     case sync_pb::WalletMaskedCreditCard::UNKNOWN_CARD_CLASS:
-      return CreditCard::CARD_TYPE_UNKNOWN;
+      break;
   }
+  return CreditCard::CARD_TYPE_UNKNOWN;
 }
 
 // Creates an AutofillProfile from the specified |card| specifics.
--- chromium-70.0.3528.4/components/policy/core/common/cloud/cloud_policy_util.cc.gcc8	2018-08-21 11:49:33.000000000 +0200
+++ chromium-70.0.3528.4/components/policy/core/common/cloud/cloud_policy_util.cc	2018-08-22 20:57:20.438070995 +0200
@@ -160,8 +160,6 @@
 
 em::Channel ConvertToProtoChannel(version_info::Channel channel) {
   switch (channel) {
-    case version_info::Channel::UNKNOWN:
-      return em::CHANNEL_UNKNOWN;
     case version_info::Channel::CANARY:
       return em::CHANNEL_CANARY;
     case version_info::Channel::DEV:
@@ -170,7 +168,10 @@
       return em::CHANNEL_BETA;
     case version_info::Channel::STABLE:
       return em::CHANNEL_STABLE;
+    case version_info::Channel::UNKNOWN:
+      break;
   }
+  return em::CHANNEL_UNKNOWN;
 }
 
 }  // namespace policy
--- chromium-70.0.3528.4/services/network/public/cpp/host_resolver_mojom_traits.cc.gcc8	2018-08-21 11:49:46.000000000 +0200
+++ chromium-70.0.3528.4/services/network/public/cpp/host_resolver_mojom_traits.cc	2018-08-22 21:04:36.936359195 +0200
@@ -221,7 +221,7 @@ DnsQueryType EnumTraits<DnsQueryType, ne
     net::DnsQueryType input) {
   switch (input) {
     case net::DnsQueryType::UNSPECIFIED:
-      return DnsQueryType::UNSPECIFIED;
+      break;
     case net::DnsQueryType::A:
       return DnsQueryType::A;
     case net::DnsQueryType::AAAA:
@@ -233,6 +233,7 @@ DnsQueryType EnumTraits<DnsQueryType, ne
     case net::DnsQueryType::SRV:
       return DnsQueryType::SRV;
   }
+  return DnsQueryType::UNSPECIFIED;
 }
 
 // static
@@ -259,6 +261,7 @@ bool EnumTraits<DnsQueryType, net::DnsQu
       *output = net::DnsQueryType::SRV;
       return true;
   }
+  return false;
 }
 
 // static
--- chromium-70.0.3528.4/chrome/browser/media/webrtc/media_stream_capture_indicator.cc.gcc8	2018-08-21 11:49:26.000000000 +0200
+++ chromium-70.0.3528.4/chrome/browser/media/webrtc/media_stream_capture_indicator.cc	2018-08-23 00:51:21.562436998 +0200
@@ -246,8 +246,9 @@ int& MediaStreamCaptureIndicator::WebCon
     case blink::mojom::MediaStreamType::NO_SERVICE:
     case blink::mojom::MediaStreamType::NUM_MEDIA_TYPES:
       NOTREACHED();
-      return video_stream_count_;
+      break;
   }
+  return video_stream_count_;
 }
 
 MediaStreamCaptureIndicator::MediaStreamCaptureIndicator() {}
--- chromium-70.0.3528.4/chrome/browser/ui/webui/media/media_engagement_ui.cc.gcc8	2018-08-21 11:49:28.000000000 +0200
+++ chromium-70.0.3528.4/chrome/browser/ui/webui/media/media_engagement_ui.cc	2018-08-23 01:36:02.540654647 +0200
@@ -99,6 +99,7 @@
       case content::AutoplayPolicy::kDocumentUserActivationRequired:
         return "document-user-activation-required";
     }
+    return "";
   }
 
   const std::string GetPreloadVersion() {
--- chromium-70.0.3528.4/chrome/browser/ui/autofill/payments/save_card_bubble_controller_impl.cc.gcc8	2018-08-21 11:49:27.000000000 +0200
+++ chromium-70.0.3528.4/chrome/browser/ui/autofill/payments/save_card_bubble_controller_impl.cc	2018-08-23 02:00:07.537955868 +0200
@@ -370,9 +370,10 @@ base::string16 SaveCardBubbleControllerI
     case BubbleType::SIGN_IN_PROMO:
     case BubbleType::FAILURE:
     case BubbleType::INACTIVE:
-      NOTREACHED();
-      return base::string16();
+      break;
   }
+  NOTREACHED();
+  return base::string16();
 }
 
 base::string16 SaveCardBubbleControllerImpl::GetDeclineButtonText() const {
@@ -409,9 +410,10 @@ base::string16 SaveCardBubbleControllerI
     case BubbleType::SIGN_IN_PROMO:
     case BubbleType::FAILURE:
     case BubbleType::INACTIVE:
-      NOTREACHED();
-      return base::string16();
+      break;
   }
+  NOTREACHED();
+  return base::string16();
 }
 
 const AccountInfo& SaveCardBubbleControllerImpl::GetAccountInfo() const {
--- chromium-70.0.3528.4/chrome/browser/ui/views/autofill/payments/local_card_migration_dialog_view.cc.gcc8	2018-08-21 11:49:28.000000000 +0200
+++ chromium-70.0.3528.4/chrome/browser/ui/views/autofill/payments/local_card_migration_dialog_view.cc	2018-08-23 02:06:24.710232264 +0200
@@ -387,6 +387,7 @@ bool LocalCardMigrationDialogView::Accep
       controller_->OnDoneButtonClicked();
       return true;
   }
+  return false;
 }
 
 bool LocalCardMigrationDialogView::Cancel() {
@@ -399,6 +400,7 @@ bool LocalCardMigrationDialogView::Cance
       controller_->OnViewCardsButtonClicked();
       return true;
   }
+  return false;
 }
 
 bool LocalCardMigrationDialogView::Close() {
@@ -471,6 +473,7 @@ base::string16 LocalCardMigrationDialogV
       return l10n_util::GetStringUTF16(
           IDS_AUTOFILL_LOCAL_CARD_MIGRATION_DIALOG_BUTTON_LABEL_DONE);
   }
+  return base::string16();
 }
 
 base::string16 LocalCardMigrationDialogView::GetCancelButtonLabel() const {
--- chromium-70.0.3528.4/third_party/blink/renderer/modules/background_fetch/background_fetch_registration.cc.gcc8	2018-08-21 11:50:19.000000000 +0200
+++ chromium-70.0.3528.4/third_party/blink/renderer/modules/background_fetch/background_fetch_registration.cc	2018-08-24 01:23:50.677245606 +0200
@@ -348,17 +348,18 @@ const String BackgroundFetchRegistration
     case mojom::BackgroundFetchResult::SUCCESS:
       return "success";
     case mojom::BackgroundFetchResult::FAILURE:
-      return "failure";
+      break;
     case mojom::BackgroundFetchResult::UNSET:
       return "";
   }
   NOTREACHED();
+  return "failure";
 }
 
 const String BackgroundFetchRegistration::failureReason() const {
   switch (failure_reason_) {
     case mojom::BackgroundFetchFailureReason::NONE:
-      return "";
+      break;
     case mojom::BackgroundFetchFailureReason::CANCELLED_FROM_UI:
     case mojom::BackgroundFetchFailureReason::CANCELLED_BY_DEVELOPER:
       return "aborted";
@@ -373,6 +374,7 @@ const String BackgroundFetchRegistration
       return "download-total-exceeded";
   }
   NOTREACHED();
+  return "";
 }
 
 void BackgroundFetchRegistration::Dispose() {
--- chromium-70.0.3528.4/third_party/blink/renderer/modules/accessibility/ax_position.cc.gcc8	2018-08-21 11:50:19.000000000 +0200
+++ chromium-70.0.3528.4/third_party/blink/renderer/modules/accessibility/ax_position.cc	2018-08-24 01:39:59.717763044 +0200
@@ -802,7 +802,7 @@ const AXObject* AXPosition::FindNeighbor
         if (next_object && next_object->AccessibilityIsIncludedInTree())
           return next_object;
       }
-      return nullptr;
+      break;
     }
 
     case AXPositionAdjustmentBehavior::kMoveLeft: {
@@ -814,9 +814,10 @@ const AXObject* AXPosition::FindNeighbor
         if (previous_object && previous_object->AccessibilityIsIncludedInTree())
           return previous_object;
       }
-      return nullptr;
+      break;
     }
   }
+  return nullptr;
 }
 
 bool operator==(const AXPosition& a, const AXPosition& b) {
--- chromium-70.0.3528.4/third_party/blink/renderer/platform/scheduler/common/metrics_helper.cc.gcc8	2018-08-21 11:50:20.000000000 +0200
+++ chromium-70.0.3528.4/third_party/blink/renderer/platform/scheduler/common/metrics_helper.cc	2018-08-24 02:02:26.257496527 +0200
@@ -42,9 +42,10 @@ scheduling_metrics::ThreadType ConvertBl
     case WebThreadType::kVideoEncoderThread:
       return scheduling_metrics::ThreadType::kRendererOtherBlinkThread;
     case WebThreadType::kCount:
-      NOTREACHED();
-      return scheduling_metrics::ThreadType::kCount;
+      break;
   }
+  NOTREACHED();
+  return scheduling_metrics::ThreadType::kCount;
 }
 
 }  // namespace
--- chromium-70.0.3528.4/third_party/blink/renderer/modules/storage/cached_storage_area.cc.gcc8	2018-08-21 11:50:19.000000000 +0200
+++ chromium-70.0.3528.4/third_party/blink/renderer/modules/storage/cached_storage_area.cc	2018-08-24 02:21:38.087682075 +0200
@@ -625,6 +625,7 @@
     }
   }
   NOTREACHED();
+  return Vector<uint8_t>();
 }
 
 }  // namespace blink
--- chromium-70.0.3528.4/content/browser/media/capture/mouse_cursor_overlay_controller_aura.cc.gcc8	2018-08-21 11:49:37.000000000 +0200
+++ chromium-70.0.3528.4/content/browser/media/capture/mouse_cursor_overlay_controller_aura.cc	2018-08-28 16:24:08.166914370 +0200
@@ -174,7 +174,7 @@
   if (auto* window = Observer::GetTargetWindow(observer_)) {
     const gfx::Size window_size = window->bounds().size();
     if (!window_size.IsEmpty()) {
-      if (auto* root_window = window->GetRootWindow()) {
+      if (window->GetRootWindow() != nullptr) {
         // Compute the cursor size in terms of DIP coordinates.
         const SkBitmap& bitmap = cursor.GetBitmap();
         const float scale_factor = cursor.device_scale_factor();
--- chromium-70.0.3528.4/third_party/blink/renderer/core/layout/layout_view.cc.gcc8	2018-08-21 11:50:18.000000000 +0200
+++ chromium-70.0.3528.4/third_party/blink/renderer/core/layout/layout_view.cc	2018-08-28 16:26:59.078801346 +0200
@@ -878,8 +878,7 @@
   if (result) {
     // Changing overflow should notify scrolling coordinator to ensures that it
     // updates non-fast scroll rects even if there is no layout.
-    if (ScrollingCoordinator* scrolling_coordinator =
-            GetDocument().GetPage()->GetScrollingCoordinator()) {
+    if (GetDocument().GetPage()->GetScrollingCoordinator() != nullptr) {
       GetFrameView()->GetScrollingContext()->SetScrollGestureRegionIsDirty(
           true);
     }
--- chromium-70.0.3534.4/components/download/internal/common/download_item_impl.cc.gcc8	2018-08-28 06:10:09.000000000 +0200
+++ chromium-70.0.3534.4/components/download/internal/common/download_item_impl.cc	2018-08-29 00:32:15.471092558 +0200
@@ -808,7 +808,7 @@
 }
 
 base::FilePath DownloadItemImpl::GetTemporaryFilePath() const {
-  if (state_ == TARGET_PENDING_INTERNAL || INTERRUPTED_TARGET_PENDING_INTERNAL)
+  if ((state_ == TARGET_PENDING_INTERNAL) || (state_ == INTERRUPTED_TARGET_PENDING_INTERNAL))
     return download_file_ ? download_file_->FullPath() : base::FilePath();
   return base::FilePath();
 }
--- chromium-70.0.3534.4/third_party/blink/renderer/core/animation/animation_time_delta.h.gcc8	2018-08-28 06:11:07.000000000 +0200
+++ chromium-70.0.3534.4/third_party/blink/renderer/core/animation/animation_time_delta.h	2018-09-03 01:38:14.169583523 +0200
@@ -53,7 +53,7 @@
     return AnimationTimeDelta(std::numeric_limits<double>::infinity());
   }
 
-  double InSecondsF() const { return delta_; }
+  constexpr double InSecondsF() const { return delta_; }
   double InMillisecondsF() const { return delta_ * 1000; }
 
   bool is_max() const {
--- chromium-70.0.3538.22/media/base/audio_processing.cc.gcc8	2018-09-19 21:10:51.000000000 +0200
+++ chromium-70.0.3538.22/media/base/audio_processing.cc	2018-09-23 20:14:22.964158434 +0200
@@ -12,7 +12,7 @@
   auto agc_to_string = [](AutomaticGainControlType type) -> const char* {
     switch (type) {
       case AutomaticGainControlType::kDisabled:
-        return "disabled";
+        break;
       case AutomaticGainControlType::kDefault:
         return "default";
       case AutomaticGainControlType::kExperimental:
@@ -20,28 +20,31 @@
       case AutomaticGainControlType::kHybridExperimental:
         return "hybrid experimental";
     }
+    return "disabled";
   };
 
   auto aec_to_string = [](EchoCancellationType type) -> const char* {
     switch (type) {
       case EchoCancellationType::kDisabled:
-        return "disabled";
+        break;
       case EchoCancellationType::kAec3:
         return "aec3";
       case EchoCancellationType::kSystemAec:
         return "system aec";
     }
+    return "disabled";
   };
 
   auto ns_to_string = [](NoiseSuppressionType type) -> const char* {
     switch (type) {
       case NoiseSuppressionType::kDisabled:
-        return "disabled";
+        break;
       case NoiseSuppressionType::kDefault:
         return "default";
       case NoiseSuppressionType::kExperimental:
         return "experimental";
     }
+    return "disabled";
   };
 
   auto bool_to_yes_no = [](bool b) -> const char* { return b ? "yes" : "no"; };
--- chromium-70.0.3538.22/components/viz/host/gpu_host_impl.cc.gcc8	2018-09-19 21:10:42.000000000 +0200
+++ chromium-70.0.3538.22/components/viz/host/gpu_host_impl.cc	2018-09-23 22:14:53.434515786 +0200
@@ -46,7 +46,6 @@ class FontRenderParams {
   friend class base::NoDestructor<FontRenderParams>;
 
   FontRenderParams();
-  ~FontRenderParams();
 
   THREAD_CHECKER(thread_checker_);
   base::Optional<gfx::FontRenderParams> params_;
@@ -66,10 +65,6 @@ const base::Optional<gfx::FontRenderPara
 
 FontRenderParams::FontRenderParams() = default;
 
-FontRenderParams::~FontRenderParams() {
-  NOTREACHED();
-}
-
 FontRenderParams& GetFontRenderParams() {
   static base::NoDestructor<FontRenderParams> instance;
   return *instance;
--- chromium-70.0.3538.22/third_party/blink/renderer/core/loader/mixed_content_checker.cc.gcc8	2018-09-19 21:11:34.000000000 +0200
+++ chromium-70.0.3538.22/third_party/blink/renderer/core/loader/mixed_content_checker.cc	2018-09-24 02:43:04.295333866 +0200
@@ -238,11 +238,12 @@ bool MixedContentChecker::IsMixedContent
     const KURL& url) {
   switch (settings.GetHttpsState()) {
     case HttpsState::kNone:
-      return false;
+      break;
 
     case HttpsState::kModern:
       return IsInsecureUrl(url);
   }
+  return false;
 }
 
 // static
--- chromium-70.0.3538.22/third_party/blink/renderer/platform/graphics/paint/scroll_paint_property_node.cc.gcc8	2018-09-19 21:11:35.000000000 +0200
+++ chromium-70.0.3538.22/third_party/blink/renderer/platform/graphics/paint/scroll_paint_property_node.cc	2018-09-24 03:31:06.508249594 +0200
@@ -12,14 +12,13 @@ WTF::String OverscrollBehaviorTypeToStri
     cc::OverscrollBehavior::OverscrollBehaviorType value) {
   switch (value) {
     case cc::OverscrollBehavior::kOverscrollBehaviorTypeNone:
-      return "none";
+      break;
     case cc::OverscrollBehavior::kOverscrollBehaviorTypeAuto:
       return "auto";
     case cc::OverscrollBehavior::kOverscrollBehaviorTypeContain:
       return "contain";
-    default:
-      NOTREACHED();
   }
+  return "none";
 }
 
 }  // namespace
--- chromium-70.0.3538.22/third_party/blink/renderer/platform/exported/mediastream/media_stream_audio_processor_options.cc.gcc8	2018-09-19 21:10:43.000000000 +0200
+++ chromium-70.0.3538.22/third_party/blink/renderer/platform/exported/mediastream/media_stream_audio_processor_options.cc	2018-09-24 03:46:13.701580453 +0200
@@ -89,12 +89,13 @@ AudioProcessingProperties::ToAudioProces
       [](EchoCancellationType type) -> media::EchoCancellationType {
     switch (type) {
       case EchoCancellationType::kEchoCancellationDisabled:
-        return media::EchoCancellationType::kDisabled;
+        break;
       case EchoCancellationType::kEchoCancellationAec3:
         return media::EchoCancellationType::kAec3;
       case EchoCancellationType::kEchoCancellationSystem:
         return media::EchoCancellationType::kSystemAec;
     }
+    return media::EchoCancellationType::kDisabled;
   };
 
   out.echo_cancellation = convert_type(echo_cancellation_type);
--- chromium-70.0.3538.22/third_party/blink/renderer/modules/webgl/webgl_rendering_context_base.cc.gcc8	2018-09-19 21:11:35.000000000 +0200
+++ chromium-70.0.3538.22/third_party/blink/renderer/modules/webgl/webgl_rendering_context_base.cc	2018-09-24 22:40:30.244928180 +0200
@@ -5141,10 +5141,6 @@ void WebGLRenderingContextBase::TexImage
     possible_direct_copy = Extensions3DUtil::CanUseCopyTextureCHROMIUM(target);
   }
 
-  GLint copy_x_offset = xoffset;
-  GLint copy_y_offset = yoffset;
-  GLenum copy_target = target;
-
   // if direct copy is not possible, create a temporary texture and then copy
   // from canvas to temporary texture to target texture.
   if (!possible_direct_copy) {
@@ -5160,9 +5156,6 @@ void WebGLRenderingContextBase::TexImage
                                GL_CLAMP_TO_EDGE);
     ContextGL()->TexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0,
                             GL_RGBA, GL_UNSIGNED_BYTE, nullptr);
-    copy_x_offset = 0;
-    copy_y_offset = 0;
-    copy_target = GL_TEXTURE_2D;
   }
 
   {