Remove base::SharedMemory::ShareToProcess.

chrome/renderer/pepper/pepper_shared_memory_message_filter.cc

Index: chrome/renderer/pepper/pepper_shared_memory_message_filter.cc
diff --git a/chrome/renderer/pepper/pepper_shared_memory_message_filter.cc b/chrome/renderer/pepper/pepper_shared_memory_message_filter.cc
index 9919fb47b03ff0f36d660633f5d5da01e63681f4..8b708238b981dfd5cbfea55299e6ac65e19a8077 100644
--- a/chrome/renderer/pepper/pepper_shared_memory_message_filter.cc
+++ b/chrome/renderer/pepper/pepper_shared_memory_message_filter.cc
@@ -49,8 +49,9 @@ void PepperSharedMemoryMessageFilter::OnHostMsgCreateSharedMemory(
   if (!shm.get())
     return;
 
-  base::SharedMemoryHandle host_shm_handle;
-  shm->ShareToProcess(base::GetCurrentProcessHandle(), &host_shm_handle);
+  // TODO(erikchen): This appears to sometimes leak the SharedMemoryHandle.
+  // https://crbug.com/640840.
+  base::SharedMemoryHandle host_shm_handle = shm->handle().Duplicate();
   *host_handle_id =
       content::PepperPluginInstance::Get(instance)
           ->GetVarTracker()