gpu: GPU service scheduler.

cc/test/test_context_support.cc

Index: cc/test/test_context_support.cc
diff --git a/cc/test/test_context_support.cc b/cc/test/test_context_support.cc
index 35e42f30ee191e42948317f4d60ae46bd0ab1203..42fa7156d00685c8b791f7e57bf149faeb32a178 100644
--- a/cc/test/test_context_support.cc
+++ b/cc/test/test_context_support.cc
@@ -19,6 +19,8 @@ TestContextSupport::TestContextSupport()
 
 TestContextSupport::~TestContextSupport() {}
 
+void TestContextSupport::EnsureWorkVisibleAsync() {}
+
 void TestContextSupport::SignalSyncToken(const gpu::SyncToken& sync_token,
                                          const base::Closure& callback) {
   sync_point_callbacks_.push_back(callback);