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      1 // Copyright 2013 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #ifndef CHROME_BROWSER_SEARCH_MOST_VISITED_IFRAME_SOURCE_H_
      6 #define CHROME_BROWSER_SEARCH_MOST_VISITED_IFRAME_SOURCE_H_
      7 
      8 #include "base/basictypes.h"
      9 #include "base/compiler_specific.h"
     10 #include "chrome/browser/search/iframe_source.h"
     11 
     12 // Serves HTML for displaying suggestions using iframes, e.g.
     13 // chrome-search://suggestion/loader.html
     14 class MostVisitedIframeSource : public IframeSource {
     15  public:
     16   MostVisitedIframeSource();
     17   virtual ~MostVisitedIframeSource();
     18 
     19   // Number of Most Visited elements on the NTP for logging purposes.
     20   static const int kNumMostVisited;
     21   // Name of the histogram keeping track of Most Visited clicks.
     22   static const char kMostVisitedHistogramName[];
     23 
     24   // Overridden from IframeSource. Public for testing.
     25   virtual void StartDataRequest(
     26       const std::string& path_and_query,
     27       int render_process_id,
     28       int render_view_id,
     29       const content::URLDataSource::GotDataCallback& callback) OVERRIDE;
     30 
     31  protected:
     32   // Overridden from IframeSource:
     33   virtual std::string GetSource() const OVERRIDE;
     34 
     35   virtual bool ServesPath(const std::string& path) const OVERRIDE;
     36 
     37   DISALLOW_COPY_AND_ASSIGN(MostVisitedIframeSource);
     38 };
     39 
     40 #endif  // CHROME_BROWSER_SEARCH_MOST_VISITED_IFRAME_SOURCE_H_
     41