[zoom bubble] Add tests for ZoomController::UpdateState() handling empty hosts.

chrome/browser/profiles/off_the_record_profile_impl_unittest.cc

Index: chrome/browser/profiles/off_the_record_profile_impl_unittest.cc
diff --git a/chrome/browser/profiles/off_the_record_profile_impl_unittest.cc b/chrome/browser/profiles/off_the_record_profile_impl_unittest.cc
index 98940add60c85f89de922901c32e4e2f9f8e009a..b85292ac7f53a7dedf7caf5c8f6a99b3b1d919e3 100644
--- a/chrome/browser/profiles/off_the_record_profile_impl_unittest.cc
+++ b/chrome/browser/profiles/off_the_record_profile_impl_unittest.cc
@@ -28,7 +28,7 @@ class TestingProfileWithHostZoomMap : public TestingProfile,
   TestingProfileWithHostZoomMap() {
     HostZoomMap* host_zoom_map = HostZoomMap::GetForBrowserContext(this);
     registrar_.Add(this, content::NOTIFICATION_ZOOM_LEVEL_CHANGED,
-                     content::Source<HostZoomMap>(host_zoom_map));
+                   content::Source<HostZoomMap>(host_zoom_map));
   }
 
   virtual ~TestingProfileWithHostZoomMap() {}