[content shell] don't pop up a download dialog during layout tests

BUG=111316
R=marja@chromium.org


Review URL: https://chromiumcodereview.appspot.com/11830051

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@176114 0039d316-1c4b-4281-b951-d872f2087c98

content/shell/shell_browser_context.cc

@@ -89,6 +89,11 @@ DownloadManagerDelegate* ShellBrowserContext::GetDownloadManagerDelegate()  {
   if (!download_manager_delegate_.get()) {
     download_manager_delegate_ = new ShellDownloadManagerDelegate();
     download_manager_delegate_->SetDownloadManager(manager);
+    CommandLine* cmd_line = CommandLine::ForCurrentProcess();
+    if (cmd_line->HasSwitch(switches::kDumpRenderTree)) {
+      download_manager_delegate_->SetDownloadBehaviorForTesting(
+          path_.Append(FILE_PATH_LITERAL("downloads")));
+    }
   }
 
   return download_manager_delegate_.get();