[Refactor] Always pass in screen coordinates to UIControlsAura::SendMouseMove()

ui/views/test/ui_controls_factory_desktop_aurax11.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <X11/keysym.h>
 #include <X11/Xlib.h>
 
 // X macro fail.
 #if defined(RootWindow)
 #undef RootWindow
@@ skipping 140 matching lines @@
       UnmaskAndSetKeycodeThenSend(dispatcher, &xevent, ShiftMask, XK_Shift_L);
     if (control) {
       UnmaskAndSetKeycodeThenSend(dispatcher, &xevent, ControlMask,
                                   XK_Control_L);
     }
     DCHECK(!xevent.xkey.state);
     RunClosureAfterAllPendingUIEvents(closure);
     return true;
   }
 
-  // Simulate a mouse move. (x,y) are absolute screen coordinates.
-  virtual bool SendMouseMove(long x, long y) OVERRIDE {
-    return SendMouseMoveNotifyWhenDone(x, y, base::Closure());
+  virtual bool SendMouseMove(long screen_x, long screen_y) OVERRIDE {
+    return SendMouseMoveNotifyWhenDone(screen_x, screen_y, base::Closure());
   }
   virtual bool SendMouseMoveNotifyWhenDone(
-      long x,
-      long y,
+      long screen_x,
+      long screen_y,
       const base::Closure& closure) OVERRIDE {
-    gfx::Point screen_point(x, y);
-    gfx::Point window_point = screen_point;
+    gfx::Point screen_point(screen_x, screen_y);
+    gfx::Point root_point = screen_point;
     aura::Window* root_window = RootWindowForPoint(screen_point);
 
     aura::client::ScreenPositionClient* screen_position_client =
           aura::client::GetScreenPositionClient(root_window);
-    if (screen_position_client) {
-      screen_position_client->ConvertPointFromScreen(root_window,
-                                                     &window_point);
-    }
+    if (screen_position_client)
+      screen_position_client->ConvertPointFromScreen(root_window, &root_point);
 
     XEvent xevent = {0};
     XMotionEvent* xmotion = &xevent.xmotion;
     xmotion->type = MotionNotify;
-    xmotion->x = window_point.x();
-    xmotion->y = window_point.y();
+    xmotion->x = root_point.x();
+    xmotion->y = root_point.y();
     xmotion->state = button_down_mask;
     xmotion->same_screen = True;
     // RootWindow will take care of other necessary fields.
     root_window->GetDispatcher()->host()->PostNativeEvent(&xevent);
     RunClosureAfterAllPendingUIEvents(closure);
     return true;
   }
   virtual bool SendMouseEvents(MouseButton type, int state) OVERRIDE {
     return SendMouseEventsNotifyWhenDone(type, state, base::Closure());
   }
@@ skipping 109 matching lines @@
 };
 
 }  // namespace
 
 UIControlsAura* CreateUIControlsDesktopAura() {
   return new UIControlsDesktopX11();
 }
 
 }  // namespace test
 }  // namespace views