When the download folder does not exist, change the download folder to a user's "Downloads"

content/browser/tab_contents/tab_contents.h

 // Copyright (c) 2011 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 CONTENT_BROWSER_TAB_CONTENTS_TAB_CONTENTS_H_
 #define CONTENT_BROWSER_TAB_CONTENTS_TAB_CONTENTS_H_
 #pragma once
 
 #include <deque>
 #include <map>
@@ skipping 379 matching lines @@
   }
 
   // Misc state & callbacks ----------------------------------------------------
 
   // Prepare for saving the current web page to disk.
   void OnSavePage();
 
   // Save page with the main HTML file path, the directory for saving resources,
   // and the save type: HTML only or complete web page. Returns true if the
   // saving process has been initiated successfully.
+  // This method is used in automated testing to bypass prompting the user for
+  // file names. Instead, the names and paths are hard coded rather than
+  // running them through file name sanitation and extension / mime checking.
   bool SavePage(const FilePath& main_file, const FilePath& dir_path,
                 SavePackage::SavePackageType save_type);
 
   // Prepare for saving the URL to disk.
   // URL may refer to the iframe on the page.
   void OnSaveURL(const GURL& url);
 
   // Returns true if the active NavigationEntry's page_id equals page_id.
   bool IsActiveEntry(int32 page_id);
 
@@ skipping 102 matching lines @@
   // automation purposes.
   friend class TestingAutomationProvider;
 
   FRIEND_TEST_ALL_PREFIXES(TabContentsTest, NoJSMessageOnInterstitials);
   FRIEND_TEST_ALL_PREFIXES(TabContentsTest, UpdateTitle);
   FRIEND_TEST_ALL_PREFIXES(TabContentsTest, CrossSiteCantPreemptAfterUnload);
   FRIEND_TEST_ALL_PREFIXES(TabContentsTest, ConstrainedWindows);
   FRIEND_TEST_ALL_PREFIXES(FormStructureBrowserTest, HTMLFiles);
   FRIEND_TEST_ALL_PREFIXES(NavigationControllerTest, HistoryNavigate);
   FRIEND_TEST_ALL_PREFIXES(RenderViewHostManagerTest, PageDoesBackAndReload);
+  FRIEND_TEST_ALL_PREFIXES(SavePageBrowserTest, SaveFolder1);
+  FRIEND_TEST_ALL_PREFIXES(SavePageBrowserTest, SaveFolder2);
+  FRIEND_TEST_ALL_PREFIXES(SavePageBrowserTest, SaveFolder3);
 
   // Temporary until the view/contents separation is complete.
   friend class TabContentsView;
 #if defined(TOOLKIT_VIEWS)
   friend class TabContentsViewViews;
 #elif defined(OS_MACOSX)
   friend class TabContentsViewMac;
 #elif defined(TOOLKIT_USES_GTK)
   friend class TabContentsViewGtk;
 #endif
 
+  // Used in automated testing to bypass prompting the user for file names.
+  // The difference between SavePageBasedOnDefaultPrefs() and SavePage()
+  // is whether the default folder prefs are used. In case of SavePage(),
+  // we need to give it the file path to which the file is saved.
+  // On the other hand, in case of SavePageBasedOnDefaultPrefs(),
+  // we need not to give the file path since the file path is determined
+  // based on the default folder prefs. This method returns the title
+  // of the current tab.
+  string16 SavePageBasedOnDefaultPrefs();
+
   // So InterstitialPage can access SetIsLoading.
   friend class InterstitialPage;
 
   // TODO(brettw) TestTabContents shouldn't exist!
   friend class TestTabContents;
 
   // Message handlers.
   void OnDidStartProvisionalLoadForFrame(int64 frame_id,
                                          bool main_frame,
                                          bool has_opener_set,
@@ skipping 309 matching lines @@
   ObserverList<TabContentsObserver> observers_;
 
   // Content restrictions, used to disable print/copy etc based on content's
   // (full-page plugins for now only) permissions.
   int content_restrictions_;
 
   DISALLOW_COPY_AND_ASSIGN(TabContents);
 };
 
 #endif  // CONTENT_BROWSER_TAB_CONTENTS_TAB_CONTENTS_H_