Fix shared memory leak on command buffer teardown

gpu/command_buffer/client/mapped_memory.cc

 // Copyright (c) 2011 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 <algorithm>
 #include <functional>
 
 #include "../client/mapped_memory.h"
 #include "../client/cmd_buffer_helper.h"
 
 namespace gpu {
-namespace {
-void DeleteMemoryChunk(MemoryChunk* chunk) {
-  delete chunk;
-}
-}
 
 MemoryChunk::MemoryChunk(
     int32 shm_id, gpu::Buffer shm, CommandBufferHelper* helper)
     : shm_id_(shm_id),
       shm_(shm),
       allocator_(shm.size, helper, shm.ptr) {
 }
 
 MappedMemoryManager::MappedMemoryManager(CommandBufferHelper* helper)
     : chunk_size_multiple_(1),
       helper_(helper) {
 }
 
 MappedMemoryManager::~MappedMemoryManager() {
-  std::for_each(chunks_.begin(),
-                chunks_.end(),
-                std::pointer_to_unary_function<MemoryChunk*, void>(
-                    DeleteMemoryChunk));
+  CommandBuffer* cmd_buf = helper_->command_buffer();
+  for (MemoryChunkVector::iterator iter = chunks_.begin();
+       iter != chunks_.end(); ++iter) {
+    MemoryChunk* chunk = *iter;
+    cmd_buf->DestroyTransferBuffer(chunk->shm_id());
+    delete chunk;
+  }
 }
 
 void* MappedMemoryManager::Alloc(
     unsigned int size, int32* shm_id, unsigned int* shm_offset) {
   GPU_DCHECK(shm_id);
   GPU_DCHECK(shm_offset);
   // See if any of the chucks can satisfy this request.
   for (size_t ii = 0; ii < chunks_.size(); ++ii) {
     MemoryChunk* chunk = chunks_[ii];
     chunk->FreeUnused();
@@ skipping 58 matching lines @@
     } else {
       ++iter;
     }
   }
 }
 
 }  // namespace gpu