chrome: Use stl utilities from the base namespace

chrome/browser/power/process_power_collector.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 "chrome/browser/power/process_power_collector.h"
 
 #include <utility>
 
 #include "base/memory/ptr_util.h"
 #include "base/process/process_handle.h"
@@ skipping 164 matching lines @@
         power::OriginPowerMapFactory::GetForBrowserContext(profile);
     if (origin_power_map)
       origin_power_map->OnAllOriginsUpdated();
   }
 }
 
 void ProcessPowerCollector::UpdateProcessInMap(
     const content::RenderProcessHost* rph,
     const GURL& origin) {
   base::ProcessHandle handle = rph->GetHandle();
-  if (!ContainsKey(metrics_map_, handle)) {
+  if (!base::ContainsKey(metrics_map_, handle)) {
     metrics_map_[handle] = base::MakeUnique<PerProcessData>(
 #if defined(OS_MACOSX)
         base::ProcessMetrics::CreateProcessMetrics(handle, nullptr),
 #else
         base::ProcessMetrics::CreateProcessMetrics(handle),
 #endif
         origin, Profile::FromBrowserContext(rph->GetBrowserContext()));
   }
 
   PerProcessData* process_data = metrics_map_[handle].get();
   process_data->set_last_cpu_percent(std::max(0.0,
       cpu_usage_callback_.is_null() ? process_data->metrics()->GetCPUUsage()
                                     : cpu_usage_callback_.Run(handle)));
   process_data->set_seen_this_cycle(true);
 }