Delete //gpu/blink/ and WebGraphicsContext3DImpl.

content/common/gpu/client/webgraphicscontext3d_command_buffer_impl.h

Index: content/common/gpu/client/webgraphicscontext3d_command_buffer_impl.h
diff --git a/content/common/gpu/client/webgraphicscontext3d_command_buffer_impl.h b/content/common/gpu/client/webgraphicscontext3d_command_buffer_impl.h
index f649a21cca9b66d7db5d25e73a99495c13641e5c..332f014b0b4eda7a4f01e6e49fc5fe7f7a12650c 100644
--- a/content/common/gpu/client/webgraphicscontext3d_command_buffer_impl.h
+++ b/content/common/gpu/client/webgraphicscontext3d_command_buffer_impl.h
@@ -18,7 +18,6 @@
 #include "base/synchronization/lock.h"
 #include "content/common/content_export.h"
 #include "content/common/gpu/client/command_buffer_metrics.h"
-#include "gpu/blink/webgraphicscontext3d_impl.h"
 #include "gpu/command_buffer/common/gles2_cmd_utils.h"
 #include "gpu/ipc/client/command_buffer_proxy_impl.h"
 #include "gpu/ipc/common/surface_handle.h"
@@ -49,7 +48,7 @@ const size_t kDefaultMinTransferBufferSize = 1 * 256 * 1024;
 const size_t kDefaultMaxTransferBufferSize = 16 * 1024 * 1024;
 
 class WebGraphicsContext3DCommandBufferImpl
-    : public gpu_blink::WebGraphicsContext3DImpl {
+    : public NON_EXPORTED_BASE(blink::WebGraphicsContext3D) {
  public:
   enum MappedMemoryReclaimLimit {
     kNoLimit = 0,
@@ -99,6 +98,14 @@ class WebGraphicsContext3DCommandBufferImpl
     DISALLOW_COPY_AND_ASSIGN(ShareGroup);
   };
 
+  class WebGraphicsContextLostCallback {
+   public:
+    virtual void onContextLost() = 0;
+
+   protected:
+    virtual ~WebGraphicsContextLostCallback() {}
+  };
+
   CONTENT_EXPORT WebGraphicsContext3DCommandBufferImpl(
       gpu::SurfaceHandle surface_handle,
       const GURL& active_url,
@@ -121,6 +128,10 @@ class WebGraphicsContext3DCommandBufferImpl
     return real_gl_.get();
   }
 
+  void SetContextLostCallback(WebGraphicsContextLostCallback* callback) {
+    context_lost_callback_ = callback;
+  }
+
   CONTENT_EXPORT bool InitializeOnCurrentThread(
       const gpu::SharedMemoryLimits& memory_limits);
 
@@ -163,6 +174,10 @@ class WebGraphicsContext3DCommandBufferImpl
 
   void OnContextLost();
 
+  bool initialized_ = false;
+  bool initialize_failed_ = false;
+  WebGraphicsContextLostCallback* context_lost_callback_ = nullptr;
+
   bool automatic_flushes_;
   gpu::gles2::ContextCreationAttribHelper attributes_;