Faster Reload: Specify AllowCaching = false for some URLDataSources that need it

chrome/browser/ui/webui/fileicon_source.h

 // Copyright (c) 2012 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_UI_WEBUI_FILEICON_SOURCE_H_
 #define CHROME_BROWSER_UI_WEBUI_FILEICON_SOURCE_H_
 
 #include <string>
 
 #include "base/files/file_path.h"
@@ skipping 12 matching lines @@
  public:
   FileIconSource();
 
   // content::URLDataSource implementation.
   std::string GetSource() const override;
   void StartDataRequest(
       const std::string& path,
       const content::ResourceRequestInfo::WebContentsGetter& wc_getter,
       const content::URLDataSource::GotDataCallback& callback) override;
   std::string GetMimeType(const std::string&) const override;
+  bool AllowCaching() const override;
 
  protected:
   ~FileIconSource() override;
 
   // Once the |path| and |icon_size| has been determined from the request, this
   // function is called to perform the actual fetch. Declared as virtual for
   // testing.
   virtual void FetchFileIcon(
       const base::FilePath& path,
       float scale_factor,
@@ skipping 17 matching lines @@
   // Called when favicon data is available from the history backend.
   void OnFileIconDataAvailable(const IconRequestDetails& details,
                                gfx::Image* icon);
 
   // Tracks tasks requesting file icons.
   base::CancelableTaskTracker cancelable_task_tracker_;
 
   DISALLOW_COPY_AND_ASSIGN(FileIconSource);
 };
 #endif  // CHROME_BROWSER_UI_WEBUI_FILEICON_SOURCE_H_