Add Panel::SetPanelBoundsInstantly for all platforms.

chrome/browser/ui/panels/panel_browser_view_browsertest.cc

 // Copyright (c) 2011 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 "base/i18n/time_formatting.h"
 #include "base/memory/scoped_ptr.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/browser_window.h"
 #include "chrome/browser/ui/panels/base_panel_browser_test.h"
@@ skipping 54 matching lines @@
 
   PanelBrowserView* GetBrowserView(Panel* panel) const {
     return static_cast<PanelBrowserView*>(panel->native_panel());
   }
 
   gfx::Rect GetViewBounds(Panel* panel) const {
     return GetBrowserView(panel)->GetBounds();
   }
 
   void SetViewBounds(Panel* panel, const gfx::Rect& rect) const {
-    return GetBrowserView(panel)->SetPanelBounds(rect);
+    return GetBrowserView(panel)->SetPanelBounds(rect, true);  // use animation.
   }
 
   gfx::NativeWindow GetNativeWindow(Panel* panel) const {
     return GetBrowserView(panel)->GetNativeHandle();
   }
 
   ui::SlideAnimation* GetBoundsAnimator(Panel* panel) const {
     return GetBrowserView(panel)->bounds_animator_.get();
   }
 
@@ skipping 526 matching lines @@
 // TODO(jianli): Investigate why this fails on win trunk build.
 // http://crbug.com/102734
 IN_PROC_BROWSER_TEST_F(PanelBrowserViewTest, DISABLED_DrawAttention) {
   TestDrawAttention();
 }
 
 IN_PROC_BROWSER_TEST_F(PanelBrowserViewTest, ChangeAutoHideTaskBarThickness) {
   TestChangeAutoHideTaskBarThickness();
 }
 #endif