Add GL_CHROMIUM_get_error_query

gpu/command_buffer/service/gles2_cmd_decoder.cc

Index: gpu/command_buffer/service/gles2_cmd_decoder.cc
diff --git a/gpu/command_buffer/service/gles2_cmd_decoder.cc b/gpu/command_buffer/service/gles2_cmd_decoder.cc
index 0f2ef5c1c8b6317461f9d848afb048a6e19ccb27..3dd201cef67ff3ad9f2fd410a56cfcbc7e656885 100644
--- a/gpu/command_buffer/service/gles2_cmd_decoder.cc
+++ b/gpu/command_buffer/service/gles2_cmd_decoder.cc
@@ -514,6 +514,8 @@ class GLES2DecoderImpl : public base::SupportsWeakPtr<GLES2DecoderImpl>,
   virtual bool GetServiceTextureId(uint32 client_texture_id,
                                    uint32* service_texture_id);
 
+  virtual uint32 GetGLError() OVERRIDE;
+
   // Restores the current state to the user's settings.
   void RestoreCurrentFramebufferBindings();
   void RestoreCurrentRenderbufferBindings();
@@ -1176,9 +1178,6 @@ class GLES2DecoderImpl : public base::SupportsWeakPtr<GLES2DecoderImpl>,
   // false if pname is unknown.
   bool GetNumValuesReturnedForGLGet(GLenum pname, GLsizei* num_values);
 
-  // Gets the GLError through our wrapper.
-  GLenum GetGLError();
-
   // Gets the GLError and stores it in our wrapper. Effectively
   // this lets us peek at the error without losing it.
   GLenum PeekGLError();
@@ -5041,7 +5040,7 @@ void GLES2DecoderImpl::DoUseProgram(GLuint program) {
   }
 }
 
-GLenum GLES2DecoderImpl::GetGLError() {
+uint32 GLES2DecoderImpl::GetGLError() {
   // Check the GL error first, then our wrapped error.
   GLenum error = glGetError();
   if (error == GL_NO_ERROR && error_bits_ != 0) {