Implement native GMB backbuffers in the GLES2 Command Decoder.

gpu/command_buffer/service/gles2_cmd_decoder_unittest_base.cc

Index: gpu/command_buffer/service/gles2_cmd_decoder_unittest_base.cc
diff --git a/gpu/command_buffer/service/gles2_cmd_decoder_unittest_base.cc b/gpu/command_buffer/service/gles2_cmd_decoder_unittest_base.cc
index 3e386bbf815dccd259aea721aadb0e8a2594d02c..56711f23d8da0b5079a35376859c7975fa8de4e2 100644
--- a/gpu/command_buffer/service/gles2_cmd_decoder_unittest_base.cc
+++ b/gpu/command_buffer/service/gles2_cmd_decoder_unittest_base.cc
@@ -194,11 +194,11 @@ void GLES2DecoderTestBase::InitDecoderWithCommandLine(
     feature_info = new FeatureInfo(*command_line, gpu_driver_bug_workaround);
   }
 
-  group_ = scoped_refptr<ContextGroup>(new ContextGroup(
-      gpu_preferences_, NULL, memory_tracker_,
-      new ShaderTranslatorCache(gpu_preferences_),
-      new FramebufferCompletenessCache, feature_info,
-      normalized_init.bind_generates_resource));
+  group_ = scoped_refptr<ContextGroup>(
+      new ContextGroup(gpu_preferences_, NULL, memory_tracker_,
+                       new ShaderTranslatorCache(gpu_preferences_),
+                       new FramebufferCompletenessCache, feature_info,
+                       normalized_init.bind_generates_resource, nullptr));
   bool use_default_textures = normalized_init.bind_generates_resource;
 
   InSequence sequence;