Make cc::SoftwareImageDecodeController, cc::ResourcePool, and cc::StagingBufferPoo…

components/memory_coordinator/child/child_memory_coordinator_impl.h

Index: components/memory_coordinator/child/child_memory_coordinator_impl.h
diff --git a/components/memory_coordinator/child/child_memory_coordinator_impl.h b/components/memory_coordinator/child/child_memory_coordinator_impl.h
index c63a7639624ed60b050c1645c02f250e3850cc57..b9126f9a901e72141c36e807cebdf753cb813644 100644
--- a/components/memory_coordinator/child/child_memory_coordinator_impl.h
+++ b/components/memory_coordinator/child/child_memory_coordinator_impl.h
@@ -39,6 +39,11 @@ class MEMORY_COORDINATOR_EXPORT ChildMemoryCoordinatorImpl
   // mojom::ChildMemoryCoordinator implementations:
   void OnStateChange(mojom::MemoryState state) override;
 
+  void PrepareToSuspend() {
+    // TODO(tasak): Change states of memory coordinator clients to be
+    // SUSPENDED.
+  }
+
  protected:
   ChildMemoryCoordinatorDelegate* delegate() { return delegate_; }