[WIP] make GURL::path() return a StringPiece

chrome/browser/task_manager/providers/web_contents/tab_contents_tag_browsertest.cc

Index: chrome/browser/task_manager/providers/web_contents/tab_contents_tag_browsertest.cc
diff --git a/chrome/browser/task_manager/providers/web_contents/tab_contents_tag_browsertest.cc b/chrome/browser/task_manager/providers/web_contents/tab_contents_tag_browsertest.cc
index 08e35d449bf7b5d51a43d392cb0033a805b061dd..9b65f777d190aa8c8129ca0b12c6138897e50435 100644
--- a/chrome/browser/task_manager/providers/web_contents/tab_contents_tag_browsertest.cc
+++ b/chrome/browser/task_manager/providers/web_contents/tab_contents_tag_browsertest.cc
@@ -155,8 +155,8 @@ class TabContentsTagTest : public InProcessBrowserTest {
   // Returns the expected title for |url| if |url| does not specify a custom
   // title (e.g. via the <title> tag).
   base::string16 GetDefaultTitleForUrl(const GURL& url) const {
-    base::string16 title =
-        base::UTF8ToUTF16(url.host() + ":" + url.port() + url.path());
+    base::string16 title = base::UTF8ToUTF16(url.host() + ":" + url.port() +
+                                             url.path().as_string());
     return l10n_util::GetStringFUTF16(IDS_TASK_MANAGER_TAB_PREFIX, title);
   }