gpu: Add CHROMIUM_gpu_memory_buffer_image extension.

webkit/common/gpu/webgraphicscontext3d_impl.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 WEBKIT_COMMON_GPU_WEBGRAPHICSCONTEXT3D_IMPL_H_
 #define WEBKIT_COMMON_GPU_WEBGRAPHICSCONTEXT3D_IMPL_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 521 matching lines @@
       WGC3Dsizei n,
       const WGC3Denum* bufs);
 
   // GL_ANGLE_instanced_arrays
   virtual void drawArraysInstancedANGLE(WGC3Denum mode, WGC3Dint first,
       WGC3Dsizei count, WGC3Dsizei primcount);
   virtual void drawElementsInstancedANGLE(WGC3Denum mode, WGC3Dsizei count,
       WGC3Denum type, WGC3Dintptr offset, WGC3Dsizei primcount);
   virtual void vertexAttribDivisorANGLE(WGC3Duint index, WGC3Duint divisor);
 
-  // GL_CHROMIUM_map_image
+  // GL_CHROMIUM_image
   virtual WGC3Duint createImageCHROMIUM(WGC3Dsizei width,
                                         WGC3Dsizei height,
                                         WGC3Denum internalformat,
                                         WGC3Denum usage);
   virtual void destroyImageCHROMIUM(WGC3Duint image_id);
   virtual void getImageParameterivCHROMIUM(
       WGC3Duint image_id, WGC3Denum pname, WGC3Dint* params);
   virtual void* mapImageCHROMIUM(WGC3Duint image_id);
   virtual void unmapImageCHROMIUM(WGC3Duint image_id);
 
+  // GL_CHROMIUM_gpu_memory_buffer_image
+  virtual WGC3Duint createGpuMemoryBufferImageCHROMIUM(WGC3Dsizei width,
+                                                       WGC3Dsizei height,
+                                                       WGC3Denum internalformat,
+                                                       WGC3Denum usage);
+
   // GL_EXT_multisampled_render_to_texture
   virtual void framebufferTexture2DMultisampleEXT(WGC3Denum target,
                                     WGC3Denum attachment,
                                     WGC3Denum textarget,
                                     WebGLId texture,
                                     WGC3Dint level,
                                     WGC3Dsizei samples);
   virtual void renderbufferStorageMultisampleEXT(
       WGC3Denum target, WGC3Dsizei samples, WGC3Denum internalformat,
       WGC3Dsizei width, WGC3Dsizei height);
@@ skipping 39 matching lines @@
 
   ::gpu::gles2::GLES2Interface* gl_;
   bool lose_context_when_out_of_memory_;
   uint32_t flush_id_;
 };
 
 }  // namespace gpu
 }  // namespace webkit
 
 #endif  // WEBKIT_COMMON_GPU_WEBGRAPHICSCONTEXT3D_IMPL_H_