Index: content/browser/device_orientation/message_filter.cc |
diff --git a/content/browser/device_orientation/message_filter.cc b/content/browser/device_orientation/message_filter.cc |
new file mode 100644 |
index 0000000000000000000000000000000000000000..34a864d7232fb22e31a640bcecf712fd00257c6c |
--- /dev/null |
+++ b/content/browser/device_orientation/message_filter.cc |
@@ -0,0 +1,39 @@ |
+// 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 "content/browser/device_orientation/message_filter.h" |
+ |
+#include "content/browser/device_orientation/observer_delegate.h" |
+#include "content/browser/device_orientation/provider.h" |
+#include "content/public/browser/browser_thread.h" |
+ |
+using content::BrowserThread; |
+ |
+namespace device_orientation { |
+ |
+MessageFilter::MessageFilter(DeviceData::Type device_data_type) |
+ : provider_(NULL), |
+ device_data_type_(device_data_type) { |
+} |
+ |
+MessageFilter::~MessageFilter() { |
+} |
+ |
+void MessageFilter::OnStartUpdating(int render_view_id) { |
+ DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO)); |
+ |
+ if (!provider_) |
+ provider_ = Provider::GetInstance(); |
+ |
+ observers_map_[render_view_id] = new ObserverDelegate(device_data_type_, |
+ provider_, render_view_id, this); |
+} |
+ |
+void MessageFilter::OnStopUpdating(int render_view_id) { |
+ DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO)); |
+ |
+ observers_map_.erase(render_view_id); |
+} |
+ |
+} // namespace device_orientation |