Moves device_orientation to content namespace

content/browser/device_orientation/observer_delegate.cc

Index: content/browser/device_orientation/observer_delegate.cc
diff --git a/content/browser/device_orientation/observer_delegate.cc b/content/browser/device_orientation/observer_delegate.cc
index 05798101923b3cd4bcd2a959a97e38bc27991edf..6598f0ff03d3556ab506ffbae42d1ec17ffeff6a 100644
--- a/content/browser/device_orientation/observer_delegate.cc
+++ b/content/browser/device_orientation/observer_delegate.cc
@@ -9,7 +9,7 @@
 #include "content/browser/device_orientation/orientation.h"
 #include "ipc/ipc_sender.h"
 
-namespace device_orientation {
+namespace content {
 
 ObserverDelegate::ObserverDelegate(DeviceData::Type device_data_type,
                                    Provider* provider, int render_view_id,
@@ -39,4 +39,4 @@ DeviceData* ObserverDelegate::EmptyDeviceData(DeviceData::Type type) {
   return new Orientation();
 }
 
-}  // namespace device_orientation
+}  // namespace content