Implemented failIfMajorPerformanceCaveat WebGL context creation attribute.

gpu/command_buffer/client/gl_in_process_context.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef GPU_COMMAND_BUFFER_CLIENT_GL_IN_PROCESS_CONTEXT_H_
 #define GPU_COMMAND_BUFFER_CLIENT_GL_IN_PROCESS_CONTEXT_H_
 
 #include "base/callback.h"
 #include "base/compiler_specific.h"
 #include "gles2_impl_export.h"
@@ skipping 22 matching lines @@
   GLInProcessContextAttribs();
 
   int32 alpha_size;
   int32 blue_size;
   int32 green_size;
   int32 red_size;
   int32 depth_size;
   int32 stencil_size;
   int32 samples;
   int32 sample_buffers;
+  int32 fail_if_major_perf_caveat;
 };
 
 class GLES2_IMPL_EXPORT GLInProcessContext {
  public:
   virtual ~GLInProcessContext() {}
 
   // Create a GLInProcessContext, if |is_offscreen| is true, renders to an
   // offscreen context. |attrib_list| must be NULL or a NONE-terminated list
   // of attribute/value pairs.
   static GLInProcessContext* CreateContext(
@@ skipping 22 matching lines @@
 
 #if defined(OS_ANDROID)
   virtual scoped_refptr<gfx::SurfaceTexture> GetSurfaceTexture(
       uint32 stream_id) = 0;
 #endif
 };
 
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_CLIENT_GL_IN_PROCESS_CONTEXT_H_