Replace OnMemoryStateChange() with OnPurgeMemory() in net/

net/sdch/sdch_owner.h

 // Copyright 2014 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 NET_SDCH_SDCH_OWNER_H_
 #define NET_SDCH_SDCH_OWNER_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 143 matching lines @@
     size_t size;
 
     DictionaryInfo() : use_count(0), size(0) {}
     DictionaryInfo(const base::Time& last_used, size_t size)
         : last_used(last_used), use_count(0), size(size) {}
     DictionaryInfo(const DictionaryInfo& rhs) = default;
     DictionaryInfo& operator=(const DictionaryInfo& rhs) = default;
   };
 
   // base::MemoryCoordinatorClient implementation:
-  void OnMemoryStateChange(base::MemoryState state) override;
+  void OnPurgeMemory() override;
 
   void OnMemoryPressure(

[xunjieli, 2017/02/08 17:26:51]

These three classes all subscribe to MemoryPressureListener as well. 
I suppose OnMemoryPressure() and OnPurgeMemory() won't be called at the same
time? Can you link a bug number here and mention the fact that
MemoryPressureListener is being deprecated?

       base::MemoryPressureListener::MemoryPressureLevel level);
 
   // Clears data to save memory usage.
   void ClearData();
 
   // Schedule loading of all dictionaries described in |persisted_info|.
   // Returns false and does not schedule a load if |persisted_info| has an
   // unsupported version or no dictionaries key. Skips any dictionaries that are
   // malformed in |persisted_info|.
   bool SchedulePersistedDictionaryLoads(
@@ skipping 94 matching lines @@
   // Creation time for this SdchOwner object, used for reporting temporal memory
   // pressure.
   base::Time creation_time_;
 
   DISALLOW_COPY_AND_ASSIGN(SdchOwner);
 };
 
 }  // namespace net
 
 #endif  // NET_SDCH_SDCH_OWNER_H_