Wires up drags to pointer watcher adapter.

ash/common/wm_shell.h

 // Copyright 2016 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 ASH_COMMON_WM_SHELL_H_
 #define ASH_COMMON_WM_SHELL_H_
 
 #include <stdint.h>
 
 #include <memory>
@@ skipping 304 matching lines @@
   virtual void AddActivationObserver(WmActivationObserver* observer) = 0;
   virtual void RemoveActivationObserver(WmActivationObserver* observer) = 0;
 
   virtual void AddDisplayObserver(WmDisplayObserver* observer) = 0;
   virtual void RemoveDisplayObserver(WmDisplayObserver* observer) = 0;
 
   void AddShellObserver(ShellObserver* observer);
   void RemoveShellObserver(ShellObserver* observer);
 
   // If |wants_moves| is true PointerWatcher::OnPointerEventObserved() is
-  // called for pointer move events. Enabling pointer moves may incur a
-  // performance hit and should be avoided if possible.
+  // called for pointer move events. If |wants_drags| is true
+  // PointerWatcher::OnPointerEventObserved() is called for pointer drag events.
+  // Enabling pointer moves or drags may incur a performance hit and should be
+  // avoided if possible.
   virtual void AddPointerWatcher(views::PointerWatcher* watcher,
-                                 bool wants_moves) = 0;
+                                 bool wants_moves,
+                                 bool wants_drags) = 0;
   virtual void RemovePointerWatcher(views::PointerWatcher* watcher) = 0;
 
   // TODO: Move these back to LockStateController when that has been moved.
   void OnLockStateEvent(LockStateObserver::EventType event);
   void AddLockStateObserver(LockStateObserver* observer);
   void RemoveLockStateObserver(LockStateObserver* observer);
 
   void SetShelfDelegateForTesting(std::unique_ptr<ShelfDelegate> test_delegate);
   void SetPaletteDelegateForTesting(
       std::unique_ptr<PaletteDelegate> palette_delegate);
@@ skipping 81 matching lines @@
   bool simulate_modal_window_open_for_testing_ = false;
 
 #if defined(OS_CHROMEOS)
   std::unique_ptr<LogoutConfirmationController> logout_confirmation_controller_;
 #endif
 };
 
 }  // namespace ash
 
 #endif  // ASH_COMMON_WM_SHELL_H_