Avoid two targeting phases in aura client-lib and EventProcessor.

ui/aura/window_targeter.h

 // Copyright (c) 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.
 
 #ifndef UI_AURA_WINDOW_TARGETER_H_
 #define UI_AURA_WINDOW_TARGETER_H_
 
 #include "base/macros.h"
 #include "ui/aura/aura_export.h"
 #include "ui/events/event_targeter.h"
@@ skipping 13 matching lines @@
   ~WindowTargeter() override;
 
   // Returns true if |window| or one of its descendants can be a target of
   // |event|. This requires that |window| and its descendants are not
   // prohibited from accepting the event, and that the event is within an
   // actionable region of the target's bounds. Note that the location etc. of
   // |event| is in |window|'s parent's coordinate system.
   virtual bool SubtreeShouldBeExploredForEvent(Window* window,
                                                const ui::LocatedEvent& event);
 
+  Window* FindTargetInRootWindow(Window* root_window,
+                                 const ui::LocatedEvent& event);
+
  protected:
   // Same as FindTargetForEvent(), but used for positional events. The location
   // etc. of |event| are in |root|'s coordinate system. When finding the target
   // for the event, the targeter can mutate the |event| (e.g. change the
   // coordinate to be in the returned target's coordinate system) so that it can
   // be dispatched to the target without any further modification.
   virtual Window* FindTargetForLocatedEvent(Window* window,
                                             ui::LocatedEvent* event);
 
   // Returns false if neither |window| nor any of its descendants are allowed
@@ skipping 12 matching lines @@
 
   // ui::EventTargeter:
   ui::EventTarget* FindTargetForEvent(ui::EventTarget* root,
                                       ui::Event* event) override;
   ui::EventTarget* FindNextBestTarget(ui::EventTarget* previous_target,
                                       ui::Event* event) override;
 
  private:
   Window* FindTargetForKeyEvent(Window* root_window, const ui::KeyEvent& event);
   Window* FindTargetForNonKeyEvent(Window* root_window, ui::Event* event);
-  Window* FindTargetInRootWindow(Window* root_window,
-                                 const ui::LocatedEvent& event);
   Window* FindTargetForLocatedEventRecursively(Window* root_window,
                                                ui::LocatedEvent* event);
 
   DISALLOW_COPY_AND_ASSIGN(WindowTargeter);
 };
 
 }  // namespace aura
 
 #endif  // UI_AURA_WINDOW_TARGETER_H_