Moves device_orientation to content namespace

content/browser/device_orientation/observer_delegate.h

Index: content/browser/device_orientation/observer_delegate.h
diff --git a/content/browser/device_orientation/observer_delegate.h b/content/browser/device_orientation/observer_delegate.h
index dfaa841e945c300691cd375206eeb6dba64c08fc..8c7dab84b08caae7c7d0128c25cabb4c20ff9a4c 100644
--- a/content/browser/device_orientation/observer_delegate.h
+++ b/content/browser/device_orientation/observer_delegate.h
@@ -12,7 +12,7 @@ namespace IPC {
 class Sender;
 }
 
-namespace device_orientation {
+namespace content {
 
 class ObserverDelegate
     : public base::RefCounted<ObserverDelegate>, public Provider::Observer {
@@ -40,6 +40,6 @@ class ObserverDelegate
   DISALLOW_COPY_AND_ASSIGN(ObserverDelegate);
 };
 
-}  // namespace device_orientation
+}  // namespace content
 
 #endif  // CONTENT_BROWSER_DEVICE_ORIENTATION_OBSERVER_DELEGATE_H_