Record add to homescreen events with URL from the owning web contents.

chrome/browser/android/shortcut_helper.cc

Index: chrome/browser/android/shortcut_helper.cc
diff --git a/chrome/browser/android/shortcut_helper.cc b/chrome/browser/android/shortcut_helper.cc
index 779e2728bf99d50f1c0902e8d5aef18775c448a6..d9007c76b6fd7b2145a73b4b5194e72a5e082669 100644
--- a/chrome/browser/android/shortcut_helper.cc
+++ b/chrome/browser/android/shortcut_helper.cc
@@ -349,7 +349,7 @@ void ShortcutHelper::RecordAddToHomescreen() {
   // Record that the shortcut has been added, so no banners will be shown
   // for this app.
   AppBannerSettingsHelper::RecordBannerEvent(
-      web_contents(), shortcut_info_.url, shortcut_info_.url.spec(),
+      web_contents(), web_contents()->GetURL(), shortcut_info_.url.spec(),
       AppBannerSettingsHelper::APP_BANNER_EVENT_DID_ADD_TO_HOMESCREEN,
       base::Time::Now());
 }