Make lost context callback a base::Closure thru the WGC3DProvider.

third_party/WebKit/Source/platform/graphics/Canvas2DLayerBridgeTest.cpp

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
  *     notice, this list of conditions and the following disclaimer in the
@@ skipping 23 matching lines @@
 #include "platform/graphics/UnacceleratedImageBufferSurface.h"
 #include "platform/graphics/test/MockGLES2Interface.h"
 #include "platform/graphics/test/MockWebGraphicsContext3D.h"
 #include "public/platform/Platform.h"
 #include "public/platform/WebExternalBitmap.h"
 #include "public/platform/WebGraphicsContext3DProvider.h"
 #include "public/platform/WebScheduler.h"
 #include "public/platform/WebTaskRunner.h"
 #include "public/platform/WebThread.h"
 #include "public/platform/WebTraceLocation.h"
+#include "public/platform/callback/WebClosure.h"
 #include "skia/ext/texture_handle.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/skia/include/core/SkCanvas.h"
 #include "third_party/skia/include/gpu/GrContext.h"
 #include "third_party/skia/include/gpu/gl/GrGLTypes.h"
 #include "third_party/skia/include/gpu/gl/SkNullGLContext.h"
 #include "wtf/RefPtr.h"
 
 using testing::AnyNumber;
@@ skipping 33 matching lines @@
     GrContext* grContext() override
     {
         return m_grContext.get();
     }
 
     gpu::gles2::GLES2Interface* contextGL() override
     {
         return m_gl;
     }
 
+    void setLostContextCallback(WebClosure) override {}
+
 private:
     WebGraphicsContext3D* m_context3d;
     gpu::gles2::GLES2Interface* m_gl;
     RefPtr<GrContext> m_grContext;
 };
 
 class Canvas2DLayerBridgePtr {
 public:
     Canvas2DLayerBridgePtr() { }
     Canvas2DLayerBridgePtr(PassRefPtr<Canvas2DLayerBridge> layerBridge)
@@ skipping 1017 matching lines @@
     WebExternalTextureMailbox mailbox;
     EXPECT_FALSE(bridge->prepareMailbox(&mailbox, 0));
     EXPECT_TRUE(bridge->checkSurfaceValid());
 
     // Tear down the bridge on the thread so that 'bridge' can go out of scope
     // without crashing due to thread checks
     postAndWaitDestroyBridgeTask(BLINK_FROM_HERE, testThread.get(), &bridge);
 }
 
 } // namespace blink