Support detaching/attaching panels via inter-strip drags.

chrome/browser/ui/panels/panel_browser_frame_view.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 "chrome/browser/ui/panels/panel_browser_frame_view.h"
 
 #include <algorithm>
 
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/themes/theme_service.h"
@@ skipping 576 matching lines @@
       top_height,
       std::max(0, width() - (2 * border_thickness)),
       std::max(0, height() - top_height - border_thickness));
 }
 
 void PanelBrowserFrameView::GetAccessibleState(ui::AccessibleViewState* state) {
   state->role = ui::AccessibilityTypes::ROLE_TITLEBAR;
 }
 
 bool PanelBrowserFrameView::OnMousePressed(const views::MouseEvent& event) {
+  // |event.location| is in the view's coordinate system. Convert it to the
+  // screen coordinate system.
+  gfx::Point mouse_location = event.location();
+  views::View::ConvertPointToScreen(this, &mouse_location);
+
   if (event.IsOnlyLeftMouseButton() &&
-      panel_browser_view_->OnTitlebarMousePressed(event.location())) {
+      panel_browser_view_->OnTitlebarMousePressed(mouse_location)) {
     return true;
   }
   return BrowserNonClientFrameView::OnMousePressed(event);
 }
 
 bool PanelBrowserFrameView::OnMouseDragged(const views::MouseEvent& event) {
-  if (panel_browser_view_->OnTitlebarMouseDragged(event.location()))
+  // |event.location| is in the view's coordinate system. Convert it to the
+  // screen coordinate system.
+  gfx::Point mouse_location = event.location();
+  views::View::ConvertPointToScreen(this, &mouse_location);
+
+  if (panel_browser_view_->OnTitlebarMouseDragged(mouse_location))
     return true;
   return BrowserNonClientFrameView::OnMouseDragged(event);
 }
 
 void PanelBrowserFrameView::OnMouseReleased(const views::MouseEvent& event) {
   if (panel_browser_view_->OnTitlebarMouseReleased())
     return;
   BrowserNonClientFrameView::OnMouseReleased(event);
 }
 
@@ skipping 302 matching lines @@
 
   settings_menu_model_.reset(
       new PanelSettingsMenuModel(panel_browser_view_->panel()));
   settings_menu_adapter_.reset(
       new views::MenuModelAdapter(settings_menu_model_.get()));
   settings_menu_ = new views::MenuItemView(settings_menu_adapter_.get());
   settings_menu_adapter_->BuildMenu(settings_menu_);
   settings_menu_runner_.reset(new views::MenuRunner(settings_menu_));
   return true;
 }