command_buffer: Batch command processing to reduce handler overheads.

gpu/command_buffer/client/mapped_memory_unittest.cc

Index: gpu/command_buffer/client/mapped_memory_unittest.cc
diff --git a/gpu/command_buffer/client/mapped_memory_unittest.cc b/gpu/command_buffer/client/mapped_memory_unittest.cc
index 2f3a9e73c65abe71c59a6757ee3d9336a6114add..963640a8315842deea388eff410bd4c6fe42dbdb 100644
--- a/gpu/command_buffer/client/mapped_memory_unittest.cc
+++ b/gpu/command_buffer/client/mapped_memory_unittest.cc
@@ -34,7 +34,7 @@ class MappedMemoryTestBase : public testing::Test {
   static const unsigned int kBufferSize = 1024;
 
   virtual void SetUp() {
-    api_mock_.reset(new AsyncAPIMock);
+    api_mock_.reset(new AsyncAPIMock(true));
     // ignore noops in the mock - we don't want to inspect the internals of the
     // helper.
     EXPECT_CALL(*api_mock_, DoCommand(cmd::kNoop, 0, _))