command_buffer: Batch command processing to reduce handler overheads.

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 4b90f9eb6f85e2bd19ce4ae1a2970385c1817d0b..9dc9fe0d8b167ab93a9e6601a0efcef3ad89e949 100644
--- a/gpu/command_buffer/service/gles2_cmd_decoder_unittest_base.cc
+++ b/gpu/command_buffer/service/gles2_cmd_decoder_unittest_base.cc
@@ -201,6 +201,12 @@ void GLES2DecoderTestBase::InitDecoderWithCommandLine(
   // we can use the ContextGroup to figure out how the real GLES2Decoder
   // will initialize itself.
   mock_decoder_.reset(new MockGLES2Decoder());
+
+  // Install FakeDoCommands handler so we can use individual DoCommand()
+  // expectations.
+  EXPECT_CALL(*mock_decoder_, DoCommands(_, _, _, _)).WillRepeatedly(
+      Invoke(mock_decoder_.get(), &MockGLES2Decoder::FakeDoCommands));
+
   EXPECT_TRUE(
       group_->Initialize(mock_decoder_.get(), DisallowedFeatures()));