[WIP] Add SharedMemoryTracker to dump base::SharedMemory usage

cc/test/test_shared_bitmap_manager.cc

 // 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.
 
 #include "cc/test/test_shared_bitmap_manager.h"
 
 #include <stdint.h>
 
 #include "base/memory/ptr_util.h"
 #include "base/memory/shared_memory.h"
 
 namespace cc {
 
 namespace {
 class OwnedSharedBitmap : public SharedBitmap {
  public:
   OwnedSharedBitmap(std::unique_ptr<base::SharedMemory> shared_memory,
                     const SharedBitmapId& id)
-      : SharedBitmap(static_cast<uint8_t*>(shared_memory->memory()), id),
+      : SharedBitmap(static_cast<uint8_t*>(shared_memory->memory()),
+                     shared_memory.get(),
+                     id),
         shared_memory_(std::move(shared_memory)) {}
 
   ~OwnedSharedBitmap() override {}
 
  private:
   std::unique_ptr<base::SharedMemory> shared_memory_;
 };
 
 }  // namespace
 
@@ skipping 11 matching lines @@
   return base::MakeUnique<OwnedSharedBitmap>(std::move(memory), id);
 }
 
 std::unique_ptr<SharedBitmap> TestSharedBitmapManager::GetSharedBitmapFromId(
     const gfx::Size&,
     const SharedBitmapId& id) {
   base::AutoLock lock(lock_);
   if (bitmap_map_.find(id) == bitmap_map_.end())
     return nullptr;
   uint8_t* pixels = static_cast<uint8_t*>(bitmap_map_[id]->memory());
-  return base::MakeUnique<SharedBitmap>(pixels, id);
+  return base::MakeUnique<SharedBitmap>(pixels, bitmap_map_[id], id);
 }
 
 }  // namespace cc