Update from chromium https://crrev.com/301725/

gpu/command_buffer/service/async_pixel_transfer_manager_egl.h

Index: gpu/command_buffer/service/async_pixel_transfer_manager_egl.h
diff --git a/gpu/command_buffer/service/async_pixel_transfer_manager_egl.h b/gpu/command_buffer/service/async_pixel_transfer_manager_egl.h
index dc6798bb40ec1356590a434fe2937f3350e474ae..0b7421666b51aaf7d6e13f83c4dfb1fd913a8118 100644
--- a/gpu/command_buffer/service/async_pixel_transfer_manager_egl.h
+++ b/gpu/command_buffer/service/async_pixel_transfer_manager_egl.h
@@ -16,18 +16,18 @@ class AsyncPixelTransferUploadStats;
 class AsyncPixelTransferManagerEGL : public AsyncPixelTransferManager {
  public:
   AsyncPixelTransferManagerEGL();
-  virtual ~AsyncPixelTransferManagerEGL();
+  ~AsyncPixelTransferManagerEGL() override;
 
   // AsyncPixelTransferManager implementation:
-  virtual void BindCompletedAsyncTransfers() override;
-  virtual void AsyncNotifyCompletion(
+  void BindCompletedAsyncTransfers() override;
+  void AsyncNotifyCompletion(
       const AsyncMemoryParams& mem_params,
       AsyncPixelTransferCompletionObserver* observer) override;
-  virtual uint32 GetTextureUploadCount() override;
-  virtual base::TimeDelta GetTotalTextureUploadTime() override;
-  virtual void ProcessMorePendingTransfers() override;
-  virtual bool NeedsProcessMorePendingTransfers() override;
-  virtual void WaitAllAsyncTexImage2D() override;
+  uint32 GetTextureUploadCount() override;
+  base::TimeDelta GetTotalTextureUploadTime() override;
+  void ProcessMorePendingTransfers() override;
+  bool NeedsProcessMorePendingTransfers() override;
+  void WaitAllAsyncTexImage2D() override;
 
   // State shared between Managers and Delegates.
   struct SharedState {
@@ -44,7 +44,7 @@ class AsyncPixelTransferManagerEGL : public AsyncPixelTransferManager {
 
  private:
   // AsyncPixelTransferManager implementation:
-  virtual AsyncPixelTransferDelegate* CreatePixelTransferDelegateImpl(
+  AsyncPixelTransferDelegate* CreatePixelTransferDelegateImpl(
       gles2::TextureRef* ref,
       const AsyncTexImage2DParams& define_params) override;