Cleanup: Remove unused variables in chrome/ found by Scythe.

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/metrics/histogram.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/stringprintf.h"
 #include "chrome/common/url_constants.h"
@@ skipping 17 matching lines @@
 const char kCommonCSSPath[] = "/common.css";
 
 }  // namespace
 
 MostVisitedIframeSource::MostVisitedIframeSource() {
 }
 
 MostVisitedIframeSource::~MostVisitedIframeSource() {
 }
 
-const int MostVisitedIframeSource::kNumMostVisited = 8;
-const char MostVisitedIframeSource::kMostVisitedHistogramName[] =
-    "NewTabPage.MostVisited";
-
 std::string MostVisitedIframeSource::GetSource() const {
   return chrome::kChromeSearchMostVisitedHost;
 }
 
 void MostVisitedIframeSource::StartDataRequest(
     const std::string& path_and_query,
     int render_process_id,
     int render_frame_id,
     const content::URLDataSource::GotDataCallback& callback) {
   GURL url(chrome::kChromeSearchMostVisitedUrl + path_and_query);
@@ skipping 28 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;
 }