Index: chrome/browser/ui/zoom/zoom_event_manager.cc |
diff --git a/chrome/browser/ui/zoom/zoom_event_manager.cc b/chrome/browser/ui/zoom/zoom_event_manager.cc |
new file mode 100644 |
index 0000000000000000000000000000000000000000..934fe251e2efb8a318b7947be19f22cd8c1aff7e |
--- /dev/null |
+++ b/chrome/browser/ui/zoom/zoom_event_manager.cc |
@@ -0,0 +1,34 @@ |
+// 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/zoom_event_manager.h" |
+ |
+#include "content/public/browser/browser_context.h" |
+ |
+namespace { |
+static const char kBrowserZoomEventManager[] = "browser_zoom_event_manager"; |
+} |
+ |
+ZoomEventManager* ZoomEventManager::GetForBrowserContext( |
+ content::BrowserContext* context) { |
+ if (!context->GetUserData(kBrowserZoomEventManager)) |
+ context->SetUserData(kBrowserZoomEventManager, new ZoomEventManager); |
+ return static_cast<ZoomEventManager*>( |
+ context->GetUserData(kBrowserZoomEventManager)); |
+} |
+ |
+ZoomEventManager::ZoomEventManager() {} |
+ |
+ZoomEventManager::~ZoomEventManager() {} |
+ |
+void ZoomEventManager::OnZoomLevelChanged( |
+ const content::HostZoomMap::ZoomLevelChange& change) { |
+ zoom_level_changed_callbacks_.Notify(change); |
+} |
+ |
+scoped_ptr<content::HostZoomMap::Subscription> |
+ZoomEventManager::AddZoomLevelChangedCallback( |
+ const content::HostZoomMap::ZoomLevelChangedCallback& callback) { |
+ return zoom_level_changed_callbacks_.Add(callback); |
+} |