Migrate chrome/browser files to histogram_macros.h includes.

chrome/browser/search/most_visited_iframe_source.cc

 // 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.
 
 #include "chrome/browser/search/most_visited_iframe_source.h"
 
 #include "base/command_line.h"
 #include "base/memory/ref_counted_memory.h"
-#include "base/metrics/histogram.h"
+#include "base/metrics/histogram_macros.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/stringprintf.h"
 #include "build/build_config.h"
 #include "chrome/browser/search/local_files_ntp_source.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/url_constants.h"
 #include "chrome/grit/browser_resources.h"
 #include "content/public/browser/user_metrics.h"
 #include "net/base/url_util.h"
 #include "url/gurl.h"
@@ skipping 80 matching lines @@
   }
 }
 
 bool MostVisitedIframeSource::ServesPath(const std::string& path) const {
   return path == kTitleHTMLPath || path == kTitleCSSPath ||
          path == kTitleJSPath || path == kThumbnailHTMLPath ||
          path == kThumbnailCSSPath || path == kThumbnailJSPath ||
          path == kSingleHTMLPath || path == kSingleCSSPath ||
          path == kSingleJSPath || path == kUtilJSPath || path == kCommonCSSPath;
 }