Expose MemoryCoordinator's global budget information.

base/memory/memory_coordinator_proxy.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 "base/memory/memory_coordinator_proxy.h"
+#include "base/process/process_metrics.h"
 
 namespace base {
 
 MemoryCoordinatorProxy::MemoryCoordinatorProxy() {
 }
 
 MemoryCoordinatorProxy::~MemoryCoordinatorProxy() {
 }
 
 MemoryCoordinatorProxy* MemoryCoordinatorProxy::GetInstance() {
   return Singleton<base::MemoryCoordinatorProxy>::get();
 }
 
 MemoryState MemoryCoordinatorProxy::GetCurrentMemoryState() const {
   if (!getter_callback_)
     return MemoryState::NORMAL;
   return getter_callback_.Run();
 }
 
 void MemoryCoordinatorProxy::SetCurrentMemoryStateForTesting(
     MemoryState memory_state) {
   DCHECK(setter_callback_);
   setter_callback_.Run(memory_state);
 }
 
+
+int64_t MemoryCoordinatorProxy::GetRemainingGlobalBudget() const {
+  if (!get_remaining_budget_callback_)
+    return 0;
+  return get_remaining_budget_callback_.Run();
+}
+
 void MemoryCoordinatorProxy::SetGetCurrentMemoryStateCallback(
     GetCurrentMemoryStateCallback callback) {
   getter_callback_ = callback;
 }
 
 void MemoryCoordinatorProxy::SetSetCurrentMemoryStateForTestingCallback(
     SetCurrentMemoryStateCallback callback) {
   setter_callback_ = callback;
 }
 
+void MemoryCoordinatorProxy::SetGetRemainingGlobalBudgetCallback(
+    GetRemainingGlobalBudgetCallback get_remaining_budget_callback) {
+  get_remaining_budget_callback_ = get_remaining_budget_callback;
+}
+
 }  // namespace base