Enabled EXT_sRGB WebGL extension support in the command buffer.

gpu/command_buffer/service/gles2_cmd_decoder.cc

 // 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.
 
 #include "gpu/command_buffer/service/gles2_cmd_decoder.h"
 
 #include <stdio.h>
 
 #include <algorithm>
 #include <list>
@@ skipping 10071 matching lines @@
     case GL_RGB16F_EXT:
       return GL_RGB;
     case GL_ALPHA16F_EXT:
       return GL_ALPHA;
     case GL_LUMINANCE16F_EXT:
       return GL_LUMINANCE;
     case GL_LUMINANCE_ALPHA16F_EXT:
       return GL_LUMINANCE_ALPHA;
     case GL_BGRA8_EXT:
       return GL_BGRA_EXT;
+    case GL_SRGB8_ALPHA8_EXT:
+      return GL_SRGB_ALPHA_EXT;
     default:
       return GL_NONE;
   }
 }
 
 void GLES2DecoderImpl::DoCopyTextureCHROMIUM(
     GLenum target, GLuint source_id, GLuint dest_id, GLint level,
     GLenum internal_format, GLenum dest_type) {
   TRACE_EVENT0("gpu", "GLES2DecoderImpl::DoCopyTextureCHROMIUM");
 
@@ skipping 1047 matching lines @@
   }
 }
 
 // Include the auto-generated part of this file. We split this because it means
 // we can easily edit the non-auto generated parts right here in this file
 // instead of having to edit some template or the code generator.
 #include "gpu/command_buffer/service/gles2_cmd_decoder_autogen.h"
 
 }  // namespace gles2
 }  // namespace gpu