Revert of Move gpu memory calculations to Compositor.

components/mus/public/cpp/context_provider.h

Index: components/mus/public/cpp/context_provider.h
diff --git a/components/mus/public/cpp/context_provider.h b/components/mus/public/cpp/context_provider.h
index 12c77fdccf8847171e6a9dfbb7bea7be9020be2c..0ffface9f425d51fdf71e876b472a4249d833979 100644
--- a/components/mus/public/cpp/context_provider.h
+++ b/components/mus/public/cpp/context_provider.h
@@ -30,6 +30,9 @@ class ContextProvider : public cc::ContextProvider {
   void DeleteCachedResources() override {}
   void SetLostContextCallback(
       const LostContextCallback& lost_context_callback) override {}
+  void SetMemoryPolicyChangedCallback(
+      const MemoryPolicyChangedCallback& memory_policy_changed_callback)
+      override {}
 
  protected:
   friend class base::RefCountedThreadSafe<ContextProvider>;