Add memory and CPU histogram for OOPIF

chrome/browser/performance_monitor/process_metrics_history.h

 // Copyright 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.
 
 #ifndef CHROME_BROWSER_PERFORMANCE_MONITOR_PROCESS_METRICS_HISTORY_H_
 #define CHROME_BROWSER_PERFORMANCE_MONITOR_PROCESS_METRICS_HISTORY_H_
 
 #include <memory>
 
 #include "base/macros.h"
@@ skipping 11 matching lines @@
   kProcessSubtypeUnknown,
   kProcessSubtypePPAPIFlash,
   kProcessSubtypeExtensionPersistent,
   kProcessSubtypeExtensionEvent
 };
 
 struct ProcessMetricsMetadata {
   base::ProcessHandle handle;
   int process_type;
   ProcessSubtypes process_subtype;
+  bool contains_oopif = false;

[jochen (gone - plz use gerrit), 2017/02/17 15:32:46]

same here

 
   ProcessMetricsMetadata()
       : handle(base::kNullProcessHandle),
         process_type(content::PROCESS_TYPE_UNKNOWN),
         process_subtype(kProcessSubtypeUnknown) {}
 };
 
 class ProcessMetricsHistory {
  public:
   ProcessMetricsHistory();
@@ skipping 28 matching lines @@
   double cpu_usage_;
 
   content::BackgroundTracingManager::TriggerHandle trace_trigger_handle_;
 
   DISALLOW_ASSIGN(ProcessMetricsHistory);
 };
 
 }  // namespace performance_monitor
 
 #endif  // CHROME_BROWSER_PERFORMANCE_MONITOR_PROCESS_METRICS_HISTORY_H_