Add MemoryCoordinator::SetClientMemoryState and GetClientMemoryState

content/browser/memory/memory_coordinator.h

 // 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.
 
 #ifndef CONTENT_BROWSER_MEMORY_MEMORY_COORDINATOR_H_
 #define CONTENT_BROWSER_MEMORY_MEMORY_COORDINATOR_H_
 
 #include "base/memory/memory_coordinator_client_registry.h"
 #include "base/memory/singleton.h"
 #include "base/process/process_handle.h"
@@ skipping 24 matching lines @@
 
   // Returns number of children. Only used for testing.
   size_t NumChildrenForTesting();
 
   // Dispatches a memory state change to the provided process. Returns true if
   // the process is tracked by this coordinator and successfully dispatches,
   // returns false otherwise.
   bool SetMemoryState(
       int render_process_id, mojom::MemoryState memory_state);
 
+  // Dispatches a memory state change to registered MemoryCoordinatorClients.
+  void SetClientMemoryState(base::MemoryState memory_state);
+
   // Returns the memory state of the specified render process. Returns UNKNOWN
   // if the process is not tracked by this coordinator.
   mojom::MemoryState GetMemoryState(int render_process_id) const;
 
+  // Returns the memory state of registered MemoryCoordinatorClients.
+  base::MemoryState GetClientMemoryState() const;
+
  protected:
   // Constructor. Protected as this is a singleton, but accessible for
   // unittests.
   MemoryCoordinator();
 
   // Adds the given ChildMemoryCoordinator as a child of this coordinator.
   void AddChildForTesting(int dummy_render_process_id,
                           mojom::ChildMemoryCoordinatorPtr child);
 
   // Callback invoked by mojo when the child connection goes down. Exposed
@@ skipping 20 matching lines @@
   };
 
   // A map from process ID (RenderProcessHost::GetID()) to child process info.
   using ChildInfoMap = std::map<int, ChildInfo>;
 
   // Tracks child processes. An entry is added when a renderer connects to
   // MemoryCoordinator and removed automatically when an underlying binding is
   // disconnected.
   ChildInfoMap children_;
 
+  base::MemoryState client_memory_state_;
+
   DISALLOW_COPY_AND_ASSIGN(MemoryCoordinator);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_MEMORY_MEMORY_COORDINATOR_H_