Make GLES2Implementation based on GLES2Interface

gpu/command_buffer/client/gles2_implementation.cc

Index: gpu/command_buffer/client/gles2_implementation.cc
diff --git a/gpu/command_buffer/client/gles2_implementation.cc b/gpu/command_buffer/client/gles2_implementation.cc
index 41ec8c1d4a366e9a973b9e31c646176d6f265eb7..be71ab67277c11a216093550ec2fe7f973252e2f 100644
--- a/gpu/command_buffer/client/gles2_implementation.cc
+++ b/gpu/command_buffer/client/gles2_implementation.cc
@@ -3431,5 +3431,10 @@ void GLES2Implementation::PopGroupMarkerEXT() {
   debug_marker_manager_.PopGroup();
 }
 
+// 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 "../client/gles2_implementation_impl_autogen.h"
+
 }  // namespace gles2
 }  // namespace gpu