Revert 212927 "Move webkitplatformsupport_impl and related from ..."

trunk/src/webkit/child/webkit_child_helpers.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 "webkit/child/webkit_child_helpers.h"
-
-#if defined(OS_LINUX)
-#include <malloc.h>
-#endif
-
-#include "base/logging.h"
-#include "base/memory/scoped_ptr.h"
-#include "base/process_util.h"
-#include "v8/include/v8.h"
-
-namespace webkit_glue {
-
-#if defined(OS_LINUX) || defined(OS_ANDROID)
-size_t MemoryUsageKB() {
-  struct mallinfo minfo = mallinfo();
-  uint64_t mem_usage =
-#if defined(USE_TCMALLOC)
-      minfo.uordblks
-#else
-      (minfo.hblkhd + minfo.arena)
-#endif
-      >> 10;
-
-  v8::HeapStatistics stat;
-  // TODO(svenpanne) The call below doesn't take web workers into account, this
-  // has to be done manually by iterating over all Isolates involved.
-  v8::Isolate::GetCurrent()->GetHeapStatistics(&stat);
-  return mem_usage + (static_cast<uint64_t>(stat.total_heap_size()) >> 10);
-}
-#elif defined(OS_MACOSX)
-size_t MemoryUsageKB() {
-  scoped_ptr<base::ProcessMetrics> process_metrics(
-      // The default port provider is sufficient to get data for the current
-      // process.
-      base::ProcessMetrics::CreateProcessMetrics(
-          base::GetCurrentProcessHandle(), NULL));
-  return process_metrics->GetWorkingSetSize() >> 10;
-}
-#else
-size_t MemoryUsageKB() {
-  scoped_ptr<base::ProcessMetrics> process_metrics(
-      base::ProcessMetrics::CreateProcessMetrics(
-          base::GetCurrentProcessHandle()));
-  return process_metrics->GetPagefileUsage() >> 10;
-}
-#endif
-
-}  // webkit_glue