No content dependencies in TemplateURLFetcher

chrome/browser/search_engines/template_url_fetcher.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_SEARCH_ENGINES_TEMPLATE_URL_FETCHER_H_
 #define CHROME_BROWSER_SEARCH_ENGINES_TEMPLATE_URL_FETCHER_H_
 
 #include "base/callback_forward.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/scoped_vector.h"
 #include "base/strings/string16.h"
 #include "components/keyed_service/core/keyed_service.h"
 
 class GURL;
 class TemplateURL;
 class TemplateURLService;
 
-namespace content {
-class WebContents;
-}
-
 namespace net {
+class URLFetcher;
 class URLRequestContextGetter;
 }
 
 // TemplateURLFetcher is responsible for downloading OpenSearch description
 // documents, creating a TemplateURL from the OSDD, and adding the TemplateURL
 // to the TemplateURLService. Downloading is done in the background.
 //
 class TemplateURLFetcher : public KeyedService {
  public:
   typedef base::Callback<void(
+      net::URLFetcher* url_fetcher)> URLFetcherCustomizeCallback;
+  typedef base::Callback<void(
       scoped_ptr<TemplateURL> template_url)> ConfirmAddSearchProviderCallback;
 
   enum ProviderType {
     AUTODETECTED_PROVIDER,
     EXPLICIT_PROVIDER  // Supplied by Javascript.
   };
 
   // Creates a TemplateURLFetcher.
   TemplateURLFetcher(TemplateURLService* template_url_service,
                      net::URLRequestContextGetter* request_context);
   virtual ~TemplateURLFetcher();
 
   // If TemplateURLFetcher is not already downloading the OSDD for osdd_url,
   // it is downloaded. If successful and the result can be parsed, a TemplateURL
-  // is added to the TemplateURLService. Takes ownership of |callbacks|.
+  // is added to the TemplateURLService.
   //
   // If |provider_type| is AUTODETECTED_PROVIDER, |keyword| must be non-empty,
   // and if there's already a non-replaceable TemplateURL in the model for
   // |keyword|, or we're already downloading an OSDD for this keyword, no
   // download is started.  If |provider_type| is EXPLICIT_PROVIDER, |keyword| is
   // ignored.
   //
-  // |web_contents| specifies which WebContents displays the page the OSDD is
-  // downloaded for. |web_contents| must not be NULL, except during tests.
-  void ScheduleDownload(const base::string16& keyword,
-                        const GURL& osdd_url,
-                        const GURL& favicon_url,
-                        content::WebContents* web_contents,
-                        const ConfirmAddSearchProviderCallback& callback,
-                        ProviderType provider_type);
+  // If |url_fetcher_customize_callback| is not null, it's run after a
+  // URLFetcher is created. This callback can be used to set additional
+  // parameters on the URLFetcher.
+  void ScheduleDownload(
+      const base::string16& keyword,
+      const GURL& osdd_url,
+      const GURL& favicon_url,
+      const URLFetcherCustomizeCallback& url_fetcher_customize_callback,
+      const ConfirmAddSearchProviderCallback& confirm_add_callback,
+      ProviderType provider_type);
 
   // The current number of outstanding requests.
   int requests_count() const { return requests_.size(); }
 
  private:
   // A RequestDelegate is created to download each OSDD. When done downloading
   // RequestCompleted is invoked back on the TemplateURLFetcher.
   class RequestDelegate;
   friend class RequestDelegate;
 
   typedef ScopedVector<RequestDelegate> Requests;
 
   // Invoked from the RequestDelegate when done downloading.
   void RequestCompleted(RequestDelegate* request);
 
   TemplateURLService* template_url_service_;
   scoped_refptr<net::URLRequestContextGetter> request_context_;
 
   // In progress requests.
   Requests requests_;
 
   DISALLOW_COPY_AND_ASSIGN(TemplateURLFetcher);
 };
 
 #endif  // CHROME_BROWSER_SEARCH_ENGINES_TEMPLATE_URL_FETCHER_H_