Fix the problem that notifications and panels overlap.

chrome/browser/ui/panels/panel.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 "chrome/browser/ui/panels/panel.h"
 
 #include "base/logging.h"
 #include "chrome/browser/extensions/extension_prefs.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/profiles/profile.h"
@@ skipping 45 matching lines @@
 
 const Extension* Panel::GetExtension() const {
   return GetExtensionFromBrowser(browser());
 }
 
 void Panel::SetPanelBounds(const gfx::Rect& bounds) {
   if (expansion_state_ == Panel::EXPANDED)
     restored_height_ = bounds.height();
 
   native_panel_->SetPanelBounds(bounds);
+
+  content::NotificationService::current()->Notify(
+      chrome::NOTIFICATION_PANEL_CHANGED_BOUNDS,
+      content::Source<Panel>(this),
+      content::NotificationService::NoDetails());
 }
 
 void Panel::SetMaxSize(const gfx::Size& max_size) {
   if (max_size_ == max_size)
     return;
   max_size_ = max_size;
 
   // Note: |render_view_host| might be NULL if the tab has not been created.
   // If so, we will do it when NOTIFICATION_TAB_ADDED is received.
   RenderViewHost* render_view_host = GetRenderViewHost();
@@ skipping 516 matching lines @@
   RequestRenderViewHostToDisableScrollbars(GetRenderViewHost());
 }
 
 Browser* Panel::browser() const {
   return native_panel_->GetPanelBrowser();
 }
 
 void Panel::DestroyBrowser() {
   native_panel_->DestroyPanelBrowser();
 }