Refactor the Heap into ThreadHeap to prepare for per thread heaps

third_party/WebKit/Source/platform/exported/Platform.cpp

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 73 matching lines @@
 {
     ASSERT(!s_platform);
     ASSERT(platform);
     s_platform = platform;
     s_platform->m_mainThread = platform->currentThread();
 
     WTF::Partitions::initialize(maxObservedSizeFunction);
     WTF::initialize();
     WTF::initializeMainThread(callOnMainThreadFunction);
 
-    Heap::init();
+    ProcessHeap::init();
 
     ThreadState::attachMainThread();
 
     // TODO(ssid): remove this check after fixing crbug.com/486782.
     if (s_platform->m_mainThread) {
         ASSERT(!s_gcTaskRunner);
         s_gcTaskRunner = new GCTaskRunner(s_platform->m_mainThread);
         s_platform->registerMemoryDumpProvider(PartitionAllocMemoryDumpProvider::instance(), "PartitionAlloc");
         s_platform->registerMemoryDumpProvider(FontCacheMemoryDumpProvider::instance(), "FontCaches");
     }
@@ skipping 11 matching lines @@
         s_platform->unregisterMemoryDumpProvider(PartitionAllocMemoryDumpProvider::instance());
         ASSERT(s_gcTaskRunner);
         delete s_gcTaskRunner;
         s_gcTaskRunner = nullptr;
     }
 
     // Detach the main thread before starting the shutdown sequence
     // so that the main thread won't get involved in a GC during the shutdown.
     ThreadState::detachMainThread();
 
-    Heap::shutdown();
+    ProcessHeap::shutdown();
 
     WTF::shutdown();
     WTF::Partitions::shutdown();
 
     s_platform->m_mainThread = nullptr;
     s_platform = nullptr;
 }
 
 void Platform::setCurrentPlatformForTesting(Platform* platform)
 {
@@ skipping 35 matching lines @@
     ProviderToAdapterMap::iterator it = memoryDumpProviders().find(provider);
     if (it == memoryDumpProviders().end())
         return;
     WebMemoryDumpProviderAdapter* adapter = it->value.get();
     base::trace_event::MemoryDumpManager::GetInstance()->UnregisterDumpProvider(adapter);
     adapter->set_is_registered(false);
     memoryDumpProviders().remove(it);
 }
 
 } // namespace blink