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

chrome/browser/ui/webui/large_icon_source.h

 // Copyright 2015 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_LARGE_ICON_SOURCE_H_
 #define CHROME_BROWSER_UI_WEBUI_LARGE_ICON_SOURCE_H_
 
 #include <memory>
 #include <string>
 
@@ skipping 33 matching lines @@
 
   ~LargeIconSource() override;
 
   // 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;
   bool ShouldReplaceExistingSource() const override;
   bool ShouldServiceRequest(const net::URLRequest* request) const override;
 
  private:
   // Called with results of large icon retrieval request.
   void OnLargeIconDataAvailable(
       const content::URLDataSource::GotDataCallback& callback,
       const GURL& url,
       int size,
       const favicon_base::LargeIconResult& bitmap_result);
 
   // Returns null to trigger "Not Found" response.
   void SendNotFoundResponse(
       const content::URLDataSource::GotDataCallback& callback);
 
   base::CancelableTaskTracker cancelable_task_tracker_;
 
   // Owned by client.
   favicon::FallbackIconService* fallback_icon_service_;
 
   // Owned by client.
   favicon::LargeIconService* large_icon_service_;
 
   DISALLOW_COPY_AND_ASSIGN(LargeIconSource);
 };
 
 #endif  // CHROME_BROWSER_UI_WEBUI_LARGE_ICON_SOURCE_H_