Make touch-resizing windows to screen edge possible

ash/wm/workspace/multi_window_resize_controller.cc

 // Copyright (c) 2012 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 "ash/wm/workspace/multi_window_resize_controller.h"
 
 #include "ash/screen_ash.h"
 #include "ash/shell.h"
 #include "ash/shell_window_ids.h"
 #include "ash/wm/coordinate_conversion.h"
@@ skipping 416 matching lines @@
   windows.push_back(windows_.window2);
   DCHECK(windows_.other_windows.empty());
   FindWindowsTouching(windows_.window2, windows_.direction,
                       &windows_.other_windows);
   for (size_t i = 0; i < windows_.other_windows.size(); ++i) {
     windows_.other_windows[i]->AddObserver(this);
     windows.push_back(windows_.other_windows[i]);
   }
   int component = windows_.direction == LEFT_RIGHT ? HTRIGHT : HTBOTTOM;
   window_resizer_.reset(WorkspaceWindowResizer::Create(
-      windows_.window1, location_in_parent, component, windows));
+      windows_.window1,
+      location_in_parent,
+      component,
+      aura::client::WINDOW_MOVE_SOURCE_MOUSE,
+      windows));
 }
 
 void MultiWindowResizeController::Resize(const gfx::Point& location_in_screen,
                                          int event_flags) {
   gfx::Point location_in_parent(location_in_screen);
   aura::client::GetScreenPositionClient(windows_.window1->GetRootWindow())->
       ConvertPointFromScreen(windows_.window1->parent(), &location_in_parent);
   window_resizer_->Drag(location_in_parent, event_flags);
   gfx::Rect bounds = ScreenAsh::ConvertRectToScreen(
       windows_.window1->parent(),
@@ skipping 84 matching lines @@
 
   gfx::Point window_loc(location_in_screen);
   aura::Window::ConvertPointToTarget(
       window->GetRootWindow(), window, &window_loc);
   return window->HitTest(window_loc) &&
       window->delegate()->GetNonClientComponent(window_loc) == component;
 }
 
 }  // namespace internal
 }  // namespace ash