gpu: Add CHROMIUM_gpu_memory_buffer_image extension.

gpu/command_buffer/common/gles2_cmd_utils_autogen.h

Index: gpu/command_buffer/common/gles2_cmd_utils_autogen.h
diff --git a/gpu/command_buffer/common/gles2_cmd_utils_autogen.h b/gpu/command_buffer/common/gles2_cmd_utils_autogen.h
index 25556b27c443378f534cc78c7a6e0e1f6917b4f2..18712010af784abc86b0197fca33a3caf688fcb6 100644
--- a/gpu/command_buffer/common/gles2_cmd_utils_autogen.h
+++ b/gpu/command_buffer/common/gles2_cmd_utils_autogen.h
@@ -32,6 +32,8 @@ static std::string GetStringGetMaxIndexType(uint32_t value);
 static std::string GetStringGetTexParamTarget(uint32_t value);
 static std::string GetStringHintMode(uint32_t value);
 static std::string GetStringHintTarget(uint32_t value);
+static std::string GetStringImageInternalFormat(uint32_t value);
+static std::string GetStringImageUsage(uint32_t value);
 static std::string GetStringIndexType(uint32_t value);
 static std::string GetStringMatrixMode(uint32_t value);
 static std::string GetStringPixelStore(uint32_t value);