Move MockScreenOrientationController to content/shell/renderer/test_runner/

content/shell/renderer/test_runner/web_test_proxy.cc

Index: content/shell/renderer/test_runner/web_test_proxy.cc
diff --git a/content/shell/renderer/test_runner/web_test_proxy.cc b/content/shell/renderer/test_runner/web_test_proxy.cc
index 4bef535b90ed6629536b49d8edcd7801e0e0b431..5a78a103ca562fa0519dc24b5ea21213d4b78178 100644
--- a/content/shell/renderer/test_runner/web_test_proxy.cc
+++ b/content/shell/renderer/test_runner/web_test_proxy.cc
@@ -19,6 +19,7 @@
 #include "content/shell/renderer/test_runner/WebTestInterfaces.h"
 #include "content/shell/renderer/test_runner/accessibility_controller.h"
 #include "content/shell/renderer/test_runner/event_sender.h"
+#include "content/shell/renderer/test_runner/mock_screen_orientation_controller.h"
 #include "content/shell/renderer/test_runner/mock_web_push_client.h"
 #include "content/shell/renderer/test_runner/mock_web_user_media_client.h"
 #include "content/shell/renderer/test_runner/test_runner.h"
@@ -528,6 +529,13 @@ void WebTestProxyBase::DisplayAsyncThen(const base::Closure& callback) {
       &WebTestProxyBase::DidDisplayAsync, base::Unretained(this), callback));
 }
 
+MockScreenOrientationController*
+WebTestProxyBase::GetScreenOrientationClientMock() {
+  if (!screen_orientation_client_.get())
+    screen_orientation_client_.reset(new MockScreenOrientationController);
+  return screen_orientation_client_.get();
+}
+
 blink::WebMIDIClientMock* WebTestProxyBase::GetMIDIClientMock() {
   if (!midi_client_.get())
     midi_client_.reset(new blink::WebMIDIClientMock);