Stop using callbacks in MemoryCoordinatorProxy

content/browser/memory/memory_coordinator.cc

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/browser/memory/memory_coordinator.h"
 
 #include "base/memory/memory_coordinator_client_registry.h"
 #include "base/metrics/histogram_macros.h"
 #include "content/public/browser/content_browser_client.h"
 #include "content/public/browser/render_process_host.h"
@@ skipping 119 matching lines @@
       break;
     case base::MemoryPressureListener::MEMORY_PRESSURE_LEVEL_NONE:
       NOTREACHED();
   }
 }
 
 base::MemoryState MemoryCoordinator::GetGlobalMemoryState() const {
   return base::MemoryState::UNKNOWN;
 }
 
-base::MemoryState MemoryCoordinator::GetCurrentMemoryState() const {
-  return base::MemoryState::UNKNOWN;
-}
-
-void MemoryCoordinator::SetCurrentMemoryStateForTesting(
-    base::MemoryState memory_state) {
+base::WeakPtr<base::MemoryCoordinatorInterface>
+MemoryCoordinator::GetWeakPtr() {
+  NOTREACHED();
+  return nullptr;
 }
 
 void MemoryCoordinator::AddChildForTesting(
     int dummy_render_process_id, mojom::ChildMemoryCoordinatorPtr child) {
   mojom::MemoryCoordinatorHandlePtr mch;
   auto request = mojo::GetProxy(&mch);
   std::unique_ptr<MemoryCoordinatorHandleImpl> handle(
       new MemoryCoordinatorHandleImpl(std::move(request), this,
                                       dummy_render_process_id));
   handle->AddChild(std::move(child));
@@ skipping 52 matching lines @@
 
 MemoryCoordinator::ChildInfo::ChildInfo() {}
 
 MemoryCoordinator::ChildInfo::ChildInfo(const ChildInfo& rhs) {
   // This is a nop, but exists for compatibility with STL containers.
 }
 
 MemoryCoordinator::ChildInfo::~ChildInfo() {}
 
 }  // namespace content