Make cc::SoftwareImageDecodeController, cc::ResourcePool, and cc::StagingBufferPoo…

cc/tiles/software_image_decode_controller.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 CC_TILES_SOFTWARE_IMAGE_DECODE_CONTROLLER_H_
 #define CC_TILES_SOFTWARE_IMAGE_DECODE_CONTROLLER_H_
 
 #include <stdint.h>
 
 #include <memory>
 #include <unordered_map>
 #include <unordered_set>
 
 #include "base/atomic_sequence_num.h"
 #include "base/containers/mru_cache.h"
 #include "base/hash.h"
 #include "base/memory/discardable_memory_allocator.h"
+#include "base/memory/memory_coordinator_client.h"
 #include "base/memory/ref_counted.h"
 #include "base/numerics/safe_math.h"
 #include "base/threading/thread_checker.h"
 #include "base/trace_event/memory_dump_provider.h"
 #include "cc/base/cc_export.h"
 #include "cc/playback/decoded_draw_image.h"
 #include "cc/playback/draw_image.h"
 #include "cc/resources/resource_format.h"
 #include "cc/tiles/image_decode_controller.h"
 #include "third_party/skia/include/core/SkRefCnt.h"
@@ skipping 67 matching lines @@
 
 // Hash function for the above ImageDecodeControllerKey.
 struct ImageDecodeControllerKeyHash {
   size_t operator()(const ImageDecodeControllerKey& key) const {
     return key.get_hash();
   }
 };
 
 class CC_EXPORT SoftwareImageDecodeController
     : public ImageDecodeController,
-      public base::trace_event::MemoryDumpProvider {
+      public base::trace_event::MemoryDumpProvider,
+      public base::MemoryCoordinatorClient {
  public:
   using ImageKey = ImageDecodeControllerKey;
   using ImageKeyHash = ImageDecodeControllerKeyHash;
 
   SoftwareImageDecodeController(ResourceFormat format,
                                 size_t locked_memory_limit_bytes);
   ~SoftwareImageDecodeController() override;
 
   // ImageDecodeController overrides.
   bool GetTaskForImageAndRef(const DrawImage& image,
@@ skipping 141 matching lines @@
   void SanityCheckState(int line, bool lock_acquired);
   void RefImage(const ImageKey& key);
   void RefAtRasterImage(const ImageKey& key);
   void UnrefAtRasterImage(const ImageKey& key);
 
   // Helper function which dumps all images in a specific ImageMRUCache.
   void DumpImageMemoryForCache(const ImageMRUCache& cache,
                                const char* cache_name,
                                base::trace_event::ProcessMemoryDump* pmd) const;
 
+  // Overriden from base::MemoryCoordinatorClient.
+  void OnMemoryStateChange(base::MemoryState state) override;
+
   std::unordered_map<ImageKey, scoped_refptr<TileTask>, ImageKeyHash>
       pending_image_tasks_;
 
   // The members below this comment can only be accessed if the lock is held to
   // ensure that they are safe to access on multiple threads.
   base::Lock lock_;
 
   // Decoded images and ref counts (predecode path).
   ImageMRUCache decoded_images_;
   std::unordered_map<ImageKey, int, ImageKeyHash> decoded_images_ref_counts_;
 
   // Decoded image and ref counts (at-raster decode path).
   ImageMRUCache at_raster_decoded_images_;
   std::unordered_map<ImageKey, int, ImageKeyHash>
       at_raster_decoded_images_ref_counts_;
 
   MemoryBudget locked_images_budget_;
 
   ResourceFormat format_;
 
   // Used to uniquely identify DecodedImages for memory traces.
   base::AtomicSequenceNumber next_tracing_id_;
 };
 
 }  // namespace cc
 
 #endif  // CC_TILES_SOFTWARE_IMAGE_DECODE_CONTROLLER_H_