[UseZoomForDSF] Alwatys use DIP coordinates in pepper plugin

ui/events/blink/blink_event_util.h

Index: ui/events/blink/blink_event_util.h
diff --git a/ui/events/blink/blink_event_util.h b/ui/events/blink/blink_event_util.h
index c0f60c921ec3b14103ba65d3d28075fb69cc3431..a320c23397bb1df859c3c8ebac03bcb56d6716d2 100644
--- a/ui/events/blink/blink_event_util.h
+++ b/ui/events/blink/blink_event_util.h
@@ -5,12 +5,15 @@
 #ifndef UI_EVENTS_BLINK_BLINK_EVENT_UTIL_H_
 #define UI_EVENTS_BLINK_BLINK_EVENT_UTIL_H_
 
+#include "base/memory/scoped_ptr.h"
+
 namespace base {
 class TimeDelta;
 }
 
 namespace blink {
 class WebGestureEvent;
+class WebInputEvent;
 class WebTouchEvent;
 }
 
@@ -39,6 +42,10 @@ blink::WebGestureEvent CreateWebGestureEventFromGestureEventData(
 
 int EventFlagsToWebEventModifiers(int flags);
 
-}  // namespace content
+scoped_ptr<blink::WebInputEvent> ScaleWebInputEvent(
+    const blink::WebInputEvent& event,
+    float scale);
+
+}  // namespace ui
 
 #endif  // UI_EVENTS_BLINK_BLINK_EVENT_UTIL_H_