[Device Service] Port ScreenOrientationListener into Device Service.

content/browser/screen_orientation/screen_orientation_delegate_android.cc

Index: content/browser/screen_orientation/screen_orientation_delegate_android.cc
diff --git a/content/browser/screen_orientation/screen_orientation_delegate_android.cc b/content/browser/screen_orientation/screen_orientation_delegate_android.cc
index d534d30e15099658618537cdd6a28778b58402e3..6a95d7db73590915f9f6b8120acfca18d0b5fb74 100644
--- a/content/browser/screen_orientation/screen_orientation_delegate_android.cc
+++ b/content/browser/screen_orientation/screen_orientation_delegate_android.cc
@@ -20,18 +20,6 @@ ScreenOrientationDelegateAndroid::~ScreenOrientationDelegateAndroid() {
   ScreenOrientationProvider::SetDelegate(nullptr);
 }
 
-// static
-void ScreenOrientationDelegateAndroid::StartAccurateListening() {
-  Java_ScreenOrientationProvider_startAccurateListening(
-      base::android::AttachCurrentThread());
-}
-
-// static
-void ScreenOrientationDelegateAndroid::StopAccurateListening() {
-  Java_ScreenOrientationProvider_stopAccurateListening(
-      base::android::AttachCurrentThread());
-}
-
 bool ScreenOrientationDelegateAndroid::FullScreenRequired(
     WebContents* web_contents) {
   ContentViewCoreImpl* cvc =