[tracing] Add SkResourceCache as suballocation to avoid double counting.

base/memory/discardable_shared_memory.cc

 // Copyright 2014 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 "base/memory/discardable_shared_memory.h"
 
 #if defined(OS_POSIX)
 #include <unistd.h>
 #endif
 
@@ skipping 79 matching lines @@
   return static_cast<SharedState*>(shared_memory.memory());
 }
 
 // Round up |size| to a multiple of page size.
 size_t AlignToPageSize(size_t size) {
   return bits::Align(size, base::GetPageSize());
 }
 
 }  // namespace
 
+// static
+const char DiscardableSharedMemory::kAllocatedObjectsDumpName[] =
+    "discardable/allocated_objects";
+
 DiscardableSharedMemory::DiscardableSharedMemory()
     : mapped_size_(0), locked_page_count_(0) {
 }
 
 DiscardableSharedMemory::DiscardableSharedMemory(
     SharedMemoryHandle shared_memory_handle)
     : shared_memory_(shared_memory_handle, false),
       mapped_size_(0),
       locked_page_count_(0) {
 }
@@ skipping 252 matching lines @@
   NOTIMPLEMENTED();
 #endif
 }
 #endif
 
 Time DiscardableSharedMemory::Now() const {
   return Time::Now();
 }
 
 }  // namespace base