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

chrome/browser/ui/download/download_tab_helper.h

Index: chrome/browser/ui/download/download_tab_helper.h
diff --git a/chrome/browser/ui/download/download_tab_helper.h b/chrome/browser/ui/download/download_tab_helper.h
index ac559136eb7b74d2056acbd2bdd50d8c95cb87db..9c9250988c49c59d51e6541ee97689585486557d 100644
--- a/chrome/browser/ui/download/download_tab_helper.h
+++ b/chrome/browser/ui/download/download_tab_helper.h
@@ -7,6 +7,7 @@
 #pragma once
 
 #include "base/basictypes.h"
+#include "base/gtest_prod_util.h"
 #include "chrome/browser/download/save_package.h"
 #include "content/browser/tab_contents/tab_contents_observer.h"
 
@@ -34,6 +35,9 @@ class DownloadTabHelper : public TabContentsObserver {
   // 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);
 
@@ -48,6 +52,21 @@ class DownloadTabHelper : public TabContentsObserver {
   void OnStartDownload(DownloadItem* download);
 
  private:
+  FRIEND_TEST_ALL_PREFIXES(SavePageBrowserTest, SavedFolder1);
+  FRIEND_TEST_ALL_PREFIXES(SavePageBrowserTest, SavedFolder2);
+  FRIEND_TEST_ALL_PREFIXES(SavePageBrowserTest, SavedFolder3);
+  FRIEND_TEST_ALL_PREFIXES(SavePageBrowserTest, SavedFolder4);
+
+  // 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();
+
   // TabContentsObserver overrides.
   virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
   virtual void DidGetUserGesture() OVERRIDE;