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

chrome/browser/profiles/profile_impl.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/profiles/profile_impl.h"
 
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/command_line.h"
 #include "base/compiler_specific.h"
@@ skipping 515 matching lines @@
       double zoom_level = 0;
 
       bool success = host_zoom_dictionary->GetDoubleWithoutPathExpansion(
           host, &zoom_level);
       DCHECK(success);
       host_zoom_map->SetZoomLevel(host, zoom_level);
     }
   }
 
   registrar_.Add(this, content::NOTIFICATION_ZOOM_LEVEL_CHANGED,
-               content::Source<HostZoomMap>(host_zoom_map));
+                 content::Source<HostZoomMap>(host_zoom_map));
 }
 
 void ProfileImpl::InitPromoResources() {
   if (promo_resource_service_)
     return;
   promo_resource_service_ = new PromoResourceService(this);
   promo_resource_service_->StartAfterDelay();
 }
 
 FilePath ProfileImpl::last_selected_directory() {
@@ skipping 598 matching lines @@
   if (!path.empty())
     *cache_path = path;
   *max_size = is_media_context ? prefs_->GetInteger(prefs::kMediaCacheSize) :
                                  prefs_->GetInteger(prefs::kDiskCacheSize);
 }
 
 base::Callback<ChromeURLDataManagerBackend*(void)>
     ProfileImpl::GetChromeURLDataManagerBackendGetter() const {
   return io_data_.GetChromeURLDataManagerBackendGetter();
 }