content: Some code cleanup related to shared memory allocation.

content/child/child_shared_bitmap_manager.cc

 // Copyright (c) 2013 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 "content/child/child_shared_bitmap_manager.h"
 
 #include <stddef.h>
 
 #include <utility>
 
@@ skipping 104 matching lines @@
     // Callers of this method are not prepared to handle failures during
     // shutdown. Exit immediately. This is expected behavior during the Fast
     // Shutdown path, so use EXIT_SUCCESS. https://crbug.com/615121.
     exit(EXIT_SUCCESS);
   }
   memory = base::MakeUnique<base::SharedMemory>(handle, false);
   if (!memory->Map(memory_size))
     CollectMemoryUsageAndDie(size, memory_size);
 #else
   bool out_of_memory;
-  memory = ChildThreadImpl::AllocateSharedMemory(memory_size, sender_.get(),
-                                                 &out_of_memory);
+  memory = ChildThreadImpl::AllocateSharedMemory(memory_size, &out_of_memory);
   if (!memory) {
     if (out_of_memory) {
       CollectMemoryUsageAndDie(size, memory_size);
     } else {
       // Callers of this method are not prepared to handle failures during
       // shutdown. Exit immediately. This is expected behavior during the Fast
       // Shutdown path, so use EXIT_SUCCESS. https://crbug.com/615121.
       exit(EXIT_SUCCESS);
     }
   }
@@ skipping 23 matching lines @@
   if (!mem->ShareToProcess(base::GetCurrentProcessHandle(), &handle_to_send))
     return std::unique_ptr<cc::SharedBitmap>();
 #endif
   sender_->Send(new ChildProcessHostMsg_AllocatedSharedBitmap(
       mem->mapped_size(), handle_to_send, id));
 
   return base::MakeUnique<ChildSharedBitmap>(sender_, mem, id);
 }
 
 }  // namespace content