Revert of Refactoring: Move some classes from content/child to platform

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

Index: third_party/WebKit/Source/platform/exported/Platform.cpp
diff --git a/third_party/WebKit/Source/platform/exported/Platform.cpp b/third_party/WebKit/Source/platform/exported/Platform.cpp
index 72904f70552b179fefbf22415ce953f662f5ff87..451fe7bb7b811df1a629f19e2e94e3ea03e79792 100644
--- a/third_party/WebKit/Source/platform/exported/Platform.cpp
+++ b/third_party/WebKit/Source/platform/exported/Platform.cpp
@@ -28,29 +28,13 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#include "base/thread_task_runner_handle.h"
-#include "base/trace_event/memory_dump_manager.h"
 #include "platform/PartitionAllocMemoryDumpProvider.h"
 #include "platform/graphics/CompositorFactory.h"
-#include "platform/web_memory_dump_provider_adapter.h"
 #include "public/platform/Platform.h"
-#include "wtf/HashMap.h"
-#include "wtf/OwnPtr.h"
 
 namespace blink {
 
 static Platform* s_platform = 0;
-using ProviderToAdapterMap = HashMap<WebMemoryDumpProvider*, OwnPtr<WebMemoryDumpProviderAdapter>>;
-
-namespace {
-
-ProviderToAdapterMap& memoryDumpProviders()
-{
-    DEFINE_STATIC_LOCAL(ProviderToAdapterMap, providerToAdapterMap, ());
-    return providerToAdapterMap;
-}
-
-} // namespace
 
 Platform::Platform()
     : m_mainThread(0)
@@ -92,25 +76,4 @@ WebThread* Platform::mainThread() const
     return m_mainThread;
 }
 
-void Platform::registerMemoryDumpProvider(WebMemoryDumpProvider* provider, const char* name)
-{
-    WebMemoryDumpProviderAdapter* adapter = new WebMemoryDumpProviderAdapter(provider);
-    ProviderToAdapterMap::AddResult result = memoryDumpProviders().add(provider, adoptPtr(adapter));
-    if (!result.isNewEntry)
-        return;
-    adapter->set_is_registered(true);
-    base::trace_event::MemoryDumpManager::GetInstance()->RegisterDumpProvider(adapter, name, base::ThreadTaskRunnerHandle::Get());
-}
-
-void Platform::unregisterMemoryDumpProvider(WebMemoryDumpProvider* provider)
-{
-    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