Replace context parenting by sharing through mailboxes

gpu/command_buffer/service/gles2_cmd_decoder_mock.h

Index: gpu/command_buffer/service/gles2_cmd_decoder_mock.h
diff --git a/gpu/command_buffer/service/gles2_cmd_decoder_mock.h b/gpu/command_buffer/service/gles2_cmd_decoder_mock.h
index ded5e4bb1ae15514505f9e495098e14265eb80a7..fbca28110da3c43c083977fac4177d8f7dcc57ed 100644
--- a/gpu/command_buffer/service/gles2_cmd_decoder_mock.h
+++ b/gpu/command_buffer/service/gles2_cmd_decoder_mock.h
@@ -9,6 +9,7 @@
 
 #include <vector>
 
+#include "gpu/command_buffer/common/mailbox.h"
 #include "gpu/command_buffer/service/gles2_cmd_decoder.h"
 #include "base/callback_forward.h"
 #include "testing/gmock/include/gmock/gmock.h"
@@ -43,7 +44,7 @@ class MockGLES2Decoder : public GLES2Decoder {
                     const std::vector<int32>& attribs));
   MOCK_METHOD1(Destroy, void(bool have_context));
   MOCK_METHOD1(SetSurface, void(const scoped_refptr<gfx::GLSurface>& surface));
-  MOCK_METHOD2(SetParent, bool(GLES2Decoder* parent, uint32 parent_texture_id));
+  MOCK_METHOD1(ProduceFrontBuffer, bool(const Mailbox& mailbox));
   MOCK_METHOD1(ResizeOffscreenFrameBuffer, bool(const gfx::Size& size));
   MOCK_METHOD0(MakeCurrent, bool());
   MOCK_METHOD0(ReleaseCurrent, void());