Fix crash of OmniboxViewViewsTest.SelectAllOnClick on Linux Aura

ui/aura/test/ui_controls_factory_aurax11.cc

Index: ui/aura/test/ui_controls_factory_aurax11.cc
diff --git a/ui/aura/test/ui_controls_factory_aurax11.cc b/ui/aura/test/ui_controls_factory_aurax11.cc
index 8421d00ffe911a6ed0e2641b8b73ebb316a8a7b1..4fb26f91b05dfbb2ede13fb7f54f9bfbc8a14340 100644
--- a/ui/aura/test/ui_controls_factory_aurax11.cc
+++ b/ui/aura/test/ui_controls_factory_aurax11.cc
@@ -142,14 +142,22 @@ class UIControlsX11 : public UIControlsAura {
       long x,
       long y,
       const base::Closure& closure) OVERRIDE {
+    gfx::Point root_location(static_cast<int>(x), static_cast<int>(y));
+    aura::client::ScreenPositionClient* screen_position_client =
+        aura::client::GetScreenPositionClient(root_window_->window());
+    if (screen_position_client) {
+      screen_position_client->ConvertPointFromScreen(root_window_->window(),
+                                                     &root_location);
+    }
+
+    // It is unnecessary to move the cursor because XGrabPointer() is not
+    // called in tests.
+
     XEvent xevent = {0};
     XMotionEvent* xmotion = &xevent.xmotion;
     xmotion->type = MotionNotify;
-    gfx::Point point = ui::ConvertPointToPixel(
-        root_window_->window()->layer(),
-        gfx::Point(static_cast<int>(x), static_cast<int>(y)));
-    xmotion->x = point.x();
-    xmotion->y = point.y();
+    xmotion->x = root_location.x();
+    xmotion->y = root_location.y();
     xmotion->state = button_down_mask;
     xmotion->same_screen = True;
     // RootWindow will take care of other necessary fields.