Implement Discard and EnsureBackbufferCHROMIUM using command buffer instead of IPC.

gpu/command_buffer/client/gles2_implementation_unittest_autogen.h

Index: gpu/command_buffer/client/gles2_implementation_unittest_autogen.h
diff --git a/gpu/command_buffer/client/gles2_implementation_unittest_autogen.h b/gpu/command_buffer/client/gles2_implementation_unittest_autogen.h
index f69981ffc655ed9495087dc5ee86bf34749d5313..4656716ec7c5cc34a14a4a8b9d4612e5c959048d 100644
--- a/gpu/command_buffer/client/gles2_implementation_unittest_autogen.h
+++ b/gpu/command_buffer/client/gles2_implementation_unittest_autogen.h
@@ -1655,5 +1655,27 @@ TEST_F(GLES2ImplementationTest, VertexAttribDivisorANGLE) {
   gl_->VertexAttribDivisorANGLE(1, 2);
   EXPECT_EQ(0, memcmp(&expected, commands_, sizeof(expected)));
 }
+
+TEST_F(GLES2ImplementationTest, DiscardBackbufferCHROMIUM) {
+  struct Cmds {
+    DiscardBackbufferCHROMIUM cmd;
+  };
+  Cmds expected;
+  expected.cmd.Init();
+
+  gl_->DiscardBackbufferCHROMIUM();
+  EXPECT_EQ(0, memcmp(&expected, commands_, sizeof(expected)));
+}
+
+TEST_F(GLES2ImplementationTest, EnsureBackbufferCHROMIUM) {
+  struct Cmds {
+    EnsureBackbufferCHROMIUM cmd;
+  };
+  Cmds expected;
+  expected.cmd.Init();
+
+  gl_->EnsureBackbufferCHROMIUM();
+  EXPECT_EQ(0, memcmp(&expected, commands_, sizeof(expected)));
+}
 #endif  // GPU_COMMAND_BUFFER_CLIENT_GLES2_IMPLEMENTATION_UNITTEST_AUTOGEN_H_