Move ZoomObserver, ZoomController and ZoomEventManager to components/.

chrome/browser/ui/zoom/chrome_zoom_level_prefs.cc

 // Copyright 2014 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/ui/zoom/chrome_zoom_level_prefs.h"
 
 #include "base/bind.h"
 #include "base/prefs/json_pref_store.h"
 #include "base/prefs/pref_filter.h"
 #include "base/prefs/pref_registry_simple.h"
 #include "base/prefs/pref_service_factory.h"
 #include "base/prefs/scoped_user_pref_update.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/values.h"
-#include "chrome/browser/ui/zoom/zoom_event_manager.h"
 #include "chrome/common/chrome_constants.h"
 #include "chrome/common/pref_names.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/host_zoom_map.h"
 #include "content/public/common/page_zoom.h"
+#include "extensions/browser/ui/zoom/zoom_event_manager.h"
 
 namespace {
 
 std::string GetHash(
     const base::FilePath& relative_path) {
   size_t int_key =
       BASE_HASH_NAMESPACE::hash<base::FilePath>()(relative_path);
   return base::SizeTToString(int_key);
 }
 
@@ skipping 167 matching lines @@
     // don't need to worry that host_zoom_dictionary is indirectly affected
     // by calls to HostZoomMap::SetZoomLevelForHost().
     ExtractPerHostZoomLevels(host_zoom_dictionary,
                              true /* sanitize_partition_host_zoom_levels */);
   }
   zoom_subscription_ = host_zoom_map_->AddZoomLevelChangedCallback(base::Bind(
       &ChromeZoomLevelPrefs::OnZoomLevelChanged, base::Unretained(this)));
 }
 
 }  // namespace chrome