[For trybots test] [ScreenOrientation] Hide ScreenOrientationProvider inside WebContentsImpl.

ash/content/screen_orientation_delegate_chromeos.cc

Index: ash/content/screen_orientation_delegate_chromeos.cc
diff --git a/ash/content/screen_orientation_delegate_chromeos.cc b/ash/content/screen_orientation_delegate_chromeos.cc
index ab9a4c29dbf1908790dc1cf48c3cb0503b5868e9..76243b2e4a2836b786e1dc86d86627125c5751b6 100644
--- a/ash/content/screen_orientation_delegate_chromeos.cc
+++ b/ash/content/screen_orientation_delegate_chromeos.cc
@@ -7,17 +7,16 @@
 #include "ash/common/wm_window.h"
 #include "ash/display/screen_orientation_controller_chromeos.h"
 #include "ash/shell.h"
-#include "content/public/browser/screen_orientation_provider.h"
 #include "content/public/browser/web_contents.h"
 
 namespace ash {
 
 ScreenOrientationDelegateChromeos::ScreenOrientationDelegateChromeos() {
-  content::ScreenOrientationProvider::SetDelegate(this);
+  content::WebContents::SetScreenOrientationDelegate(this);
 }
 
 ScreenOrientationDelegateChromeos::~ScreenOrientationDelegateChromeos() {
-  content::ScreenOrientationProvider::SetDelegate(nullptr);
+  content::WebContents::SetScreenOrientationDelegate(nullptr);
 }
 
 bool ScreenOrientationDelegateChromeos::FullScreenRequired(