Move WindowResizer to CoreWM.

ash/wm/workspace/workspace_window_resizer.cc

Index: ash/wm/workspace/workspace_window_resizer.cc
===================================================================
--- ash/wm/workspace/workspace_window_resizer.cc	(revision 173169)
+++ ash/wm/workspace/workspace_window_resizer.cc	(working copy)
@@ -32,22 +32,23 @@
 
 namespace ash {
 
-scoped_ptr<WindowResizer> CreateWindowResizer(aura::Window* window,
-                                              const gfx::Point& point_in_parent,
-                                              int window_component) {
+scoped_ptr<views::corewm::WindowResizer> CreateWindowResizer(
+    aura::Window* window,
+    const gfx::Point& point_in_parent,
+    int window_component) {
   DCHECK(window);
   // No need to return a resizer when the window cannot get resized.
   if (!wm::CanResizeWindow(window) && window_component != HTCAPTION)
-    return scoped_ptr<WindowResizer>();
+    return scoped_ptr<views::corewm::WindowResizer>();
 
-  WindowResizer* window_resizer = NULL;
+  views::corewm::WindowResizer* window_resizer = NULL;
   if (window->parent() &&
       window->parent()->id() == internal::kShellWindowId_WorkspaceContainer) {
     // Allow dragging maximized windows if it's not tracked by workspace. This
     // is set by tab dragging code.
     if (!wm::IsWindowNormal(window) &&
         (window_component != HTCAPTION || GetTrackedByWorkspace(window)))
-      return scoped_ptr<WindowResizer>();
+      return scoped_ptr<views::corewm::WindowResizer>();
     window_resizer = internal::WorkspaceWindowResizer::Create(
         window,
         point_in_parent,
@@ -61,7 +62,7 @@
     window_resizer = internal::DragWindowResizer::Create(
         window_resizer, window, point_in_parent, window_component);
   }
-  return make_scoped_ptr<WindowResizer>(window_resizer);
+  return make_scoped_ptr<views::corewm::WindowResizer>(window_resizer);
 }
 
 namespace internal {