Introduce MemoryCoordinatorProxy in base

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 "content/public/browser/content_browser_client.h"
 #include "content/public/browser/render_process_host.h"
 #include "content/public/common/content_client.h"
@@ skipping 102 matching lines @@
 }
 
 mojom::MemoryState MemoryCoordinator::GetMemoryState(
     int render_process_id) const {
   auto iter = children_.find(render_process_id);
   if (iter == children_.end())
     return mojom::MemoryState::UNKNOWN;
   return iter->second.memory_state;
 }
 
+void MemoryCoordinator::EnableFeaturesForTesting() {
+  base::FeatureList::ClearInstanceForTesting();
+  std::unique_ptr<base::FeatureList> feature_list(new base::FeatureList);
+  feature_list->InitializeFromCommandLine(features::kMemoryCoordinator.name,
+                                          "");
+  base::FeatureList::SetInstance(std::move(feature_list));
+}
+
 base::MemoryState MemoryCoordinator::GetCurrentMemoryState() const {
   return base::MemoryState::UNKNOWN;
 }
 
 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,
@@ skipping 39 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