Add memory tracking to TexturePool.

cc/resources/resource_provider.cc

 // Copyright 2012 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 "cc/resources/resource_provider.h"
 
 #include <algorithm>
 #include <limits>
 
 #include "base/containers/hash_tables.h"
@@ skipping 1955 matching lines @@
 bool ResourceProvider::OnMemoryDump(base::trace_event::ProcessMemoryDump* pmd) {
   DCHECK(thread_checker_.CalledOnValidThread());
 
   const uint64 tracing_process_id =
       base::trace_event::MemoryDumpManager::GetInstance()
           ->GetTracingProcessId();
 
   for (const auto& resource_entry : resources_) {
     const auto& resource = resource_entry.second;
 
+    // TODO(ericrk): Add per-compositor ID in name.

[reveman, 2015/08/05 01:26:59]

A simple way to solve this is to replace ResourceProvider::next_id_ with
"base::StaticAtomicSequenceNumber g_next_resource_id"

     std::string dump_name = base::StringPrintf("cc/resource_memory/resource_%d",
                                                resource_entry.first);
     base::trace_event::MemoryAllocatorDump* dump =
         pmd->CreateAllocatorDump(dump_name);
 
     uint64_t total_bytes = ResourceUtil::UncheckedSizeInBytesAligned<size_t>(
         resource.size, resource.format);
     dump->AddScalar(base::trace_event::MemoryAllocatorDump::kNameSize,
                     base::trace_event::MemoryAllocatorDump::kUnitsBytes,
                     static_cast<uint64_t>(total_bytes));
@@ skipping 16 matching lines @@
       const int kImportance = 2;
       pmd->CreateSharedGlobalAllocatorDump(guid);
       pmd->AddOwnershipEdge(dump->guid(), guid, kImportance);
     }
   }
 
   return true;
 }
 
 }  // namespace cc