Moves device_orientation to content namespace

content/browser/device_orientation/accelerometer_mac.cc

Index: content/browser/device_orientation/accelerometer_mac.cc
diff --git a/content/browser/device_orientation/accelerometer_mac.cc b/content/browser/device_orientation/accelerometer_mac.cc
index b4c6ef0af3494d1670f2a3dc4380d1aae8f27476..6ebe7e3de544c33f380b707168bd85c1be596497 100644
--- a/content/browser/device_orientation/accelerometer_mac.cc
+++ b/content/browser/device_orientation/accelerometer_mac.cc
@@ -10,7 +10,7 @@
 #include "content/browser/device_orientation/orientation.h"
 #include "third_party/sudden_motion_sensor/sudden_motion_sensor_mac.h"
 
-namespace device_orientation {
+namespace content {
 
 // Create a AccelerometerMac object and return NULL if no valid sensor found.
 DataFetcher* AccelerometerMac::Create() {
@@ -101,4 +101,4 @@ bool AccelerometerMac::Init() {
   return sudden_motion_sensor_.get() != NULL;
 }
 
-}  // namespace device_orientation
+}  // namespace content