Revert of Move gpu memory calculations to Compositor.

cc/test/test_context_provider.cc

Index: cc/test/test_context_provider.cc
diff --git a/cc/test/test_context_provider.cc b/cc/test/test_context_provider.cc
index 0c45e62554c173c093927d97d15f5cfee3008a88..b7154812aeec7630e672917e03329ed6653461c3 100644
--- a/cc/test/test_context_provider.cc
+++ b/cc/test/test_context_provider.cc
@@ -159,6 +159,13 @@ TestWebGraphicsContext3D* TestContextProvider::UnboundTestContext3d() {
   return context3d_.get();
 }
 
+void TestContextProvider::SetMemoryAllocation(
+    const ManagedMemoryPolicy& policy) {
+  if (memory_policy_changed_callback_.is_null())
+    return;
+  memory_policy_changed_callback_.Run(policy);
+}
+
 void TestContextProvider::SetLostContextCallback(
     const LostContextCallback& cb) {
   DCHECK(context_thread_checker_.CalledOnValidThread());
@@ -166,6 +173,13 @@ void TestContextProvider::SetLostContextCallback(
   lost_context_callback_ = cb;
 }
 
+void TestContextProvider::SetMemoryPolicyChangedCallback(
+    const MemoryPolicyChangedCallback& cb) {
+  DCHECK(context_thread_checker_.CalledOnValidThread());
+  DCHECK(memory_policy_changed_callback_.is_null() || cb.is_null());
+  memory_policy_changed_callback_ = cb;
+}
+
 void TestContextProvider::SetMaxTransferBufferUsageBytes(
     size_t max_transfer_buffer_usage_bytes) {
   context3d_->SetMaxTransferBufferUsageBytes(max_transfer_buffer_usage_bytes);