FBTF: Forward declare and move constructors in chrome/common/extensions/.

chrome/browser/extensions/extension_metrics_module.cc

 // Copyright (c) 2010 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/extensions/extension_metrics_module.h"
 
+#include "base/values.h"
 #include "base/histogram.h"
 #include "chrome/common/extensions/extension.h"
 #include "chrome/browser/metrics/user_metrics.h"
 
 namespace {
 
 // Build the full name of a metrics for the given extension.  Each metric
 // is made up of the unique name within the extension followed by the
 // extension's id.  This keeps the metrics from one extension unique from
 // other extensions, as well as those metrics from chrome itself.
@@ skipping 120 matching lines @@
   return RecordValue(name, Histogram::HISTOGRAM, 1, kThreeMinMs, 50, sample);
 }
 
 bool MetricsRecordLongTimeFunction::RunImpl() {
   std::string name;
   int sample;
   EXTENSION_FUNCTION_VALIDATE(GetNameAndSample(&name, &sample));
   static const int kOneHourMs = 60 * 60 * 1000;
   return RecordValue(name, Histogram::HISTOGRAM, 1, kOneHourMs, 50, sample);
 }