gpu: Add CHROMIUM_gpu_memory_buffer_image extension.

webkit/common/gpu/webgraphicscontext3d_impl.cc

Index: webkit/common/gpu/webgraphicscontext3d_impl.cc
diff --git a/webkit/common/gpu/webgraphicscontext3d_impl.cc b/webkit/common/gpu/webgraphicscontext3d_impl.cc
index 012d487b82da6afbf46c3c05326fa3e1a19b6999..9e1606a90d7a17d283de16fb172b32f2b435fb0d 100644
--- a/webkit/common/gpu/webgraphicscontext3d_impl.cc
+++ b/webkit/common/gpu/webgraphicscontext3d_impl.cc
@@ -928,6 +928,14 @@ DELEGATE_TO_GL_1R(mapImageCHROMIUM, MapImageCHROMIUM, WGC3Duint, void*);
 
 DELEGATE_TO_GL_1(unmapImageCHROMIUM, UnmapImageCHROMIUM, WGC3Duint);
 
+DELEGATE_TO_GL_4R(createGpuMemoryBufferImageCHROMIUM,
+                  CreateGpuMemoryBufferImageCHROMIUM,
+                  WGC3Dsizei,
+                  WGC3Dsizei,
+                  WGC3Denum,
+                  WGC3Denum,
+                  WGC3Duint);
+
 DELEGATE_TO_GL_6(framebufferTexture2DMultisampleEXT,
                  FramebufferTexture2DMultisampleEXT,
                  WGC3Denum, WGC3Denum, WGC3Denum, WebGLId, WGC3Dint, WGC3Dsizei)