Implemented support for GL constext share groups in the renderer process.

gpu/command_buffer/common/gles2_cmd_format.h

 // Copyright (c) 2011 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.
 
 // This file defines the GLES2 command buffer commands.
 
 #ifndef GPU_COMMAND_BUFFER_COMMON_GLES2_CMD_FORMAT_H_
 #define GPU_COMMAND_BUFFER_COMMON_GLES2_CMD_FORMAT_H_
 
 
@@ skipping 34 matching lines @@
 #pragma pack(push, 1)
 
 namespace id_namespaces {
 
 // These are used when contexts share resources.
 enum IdNamespaces {
   kBuffers,
   kFramebuffers,
   kProgramsAndShaders,
   kRenderbuffers,
-  kTextures
+  kTextures,
+  kNumIdNamespaces
 };
 
 // These numbers must not change
 COMPILE_ASSERT(kBuffers == 0, kBuffers_is_not_0);
 COMPILE_ASSERT(kFramebuffers == 1, kFramebuffers_is_not_1);
 COMPILE_ASSERT(kProgramsAndShaders == 2, kProgramsAndShaders_is_not_2);
 COMPILE_ASSERT(kRenderbuffers == 3, kRenderbuffers_is_not_3);
 COMPILE_ASSERT(kTextures == 4, kTextures_is_not_4);
 
 }  // namespace id_namespaces
@@ skipping 452 matching lines @@
 COMPILE_ASSERT(offsetof(GetUniformLocationBucket, location_shm_offset) == 16,
                OffsetOf_GetUniformLocationBucket_location_shm_offset_not_16);
 
 #pragma pack(pop)
 
 }  // namespace gles2
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_COMMON_GLES2_CMD_FORMAT_H_