Moves device_orientation to content namespace

content/browser/device_orientation/orientation.h

Index: content/browser/device_orientation/orientation.h
diff --git a/content/browser/device_orientation/orientation.h b/content/browser/device_orientation/orientation.h
index 8abf364e0f5397f096030d94841d655508b553e3..b3ebd27c6e07308d2664b145d8f05bcf513d45e1 100644
--- a/content/browser/device_orientation/orientation.h
+++ b/content/browser/device_orientation/orientation.h
@@ -9,7 +9,7 @@
 #include "content/browser/device_orientation/device_data.h"
 #include "content/common/content_export.h"
 
-namespace device_orientation {
+namespace content {
 
 class Orientation : public DeviceData {
  public:
@@ -68,6 +68,6 @@ class Orientation : public DeviceData {
   bool can_provide_absolute_;
 };
 
-}  // namespace device_orientation
+}  // namespace content
 
 #endif  // CONTENT_BROWSER_DEVICE_ORIENTATION_ORIENTATION_H_