Introduce Platform::setCurrentPlatformForTesting

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 64 matching lines @@
     CompositorFactory::shutdown();
 
     if (s_platform->m_mainThread)
         s_platform->unregisterMemoryDumpProvider(PartitionAllocMemoryDumpProvider::instance());
 
     if (s_platform)
         s_platform->m_mainThread = 0;
     s_platform = 0;
 }
 
+void Platform::setCurrentPlatformForTesting(Platform* platform)
+{
+    s_platform = platform;
+    if (s_platform)
+        s_platform->m_mainThread = platform->currentThread();
+}
+
 Platform* Platform::current()
 {
     return s_platform;
 }
 
 WebThread* Platform::mainThread() const
 {
     return m_mainThread;
 }
 
@@ skipping 12 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