Remove parts of //cc we aren't using

services/surfaces/display_impl.cc

Index: services/surfaces/display_impl.cc
diff --git a/services/surfaces/display_impl.cc b/services/surfaces/display_impl.cc
index fd114f476b2951df732b2f32cbeb02d501b1b512..abc718c44fc663204912a737d1db624e96bf1468 100644
--- a/services/surfaces/display_impl.cc
+++ b/services/surfaces/display_impl.cc
@@ -113,9 +113,6 @@ void DisplayImpl::OutputSurfaceLost() {
       base::Bind(&DisplayImpl::OnContextCreated, base::Unretained(this)));
 }
 
-void DisplayImpl::SetMemoryPolicy(const cc::ManagedMemoryPolicy& policy) {
-}
-
 void DisplayImpl::OnVSyncParametersUpdated(int64_t timebase, int64_t interval) {
   scheduler_->OnVSyncParametersUpdated(
       base::TimeTicks::FromInternalValue(timebase),