Experimental app list: Added a current page indicator to the launcher.

ui/app_list/views/app_list_background.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 "ui/app_list/views/app_list_background.h"
 
 #include "base/command_line.h"
 #include "grit/ui_resources.h"
 #include "third_party/skia/include/core/SkPaint.h"
 #include "third_party/skia/include/core/SkPath.h"
@@ skipping 70 matching lines @@
 
   paint.setColor(kContentsBackgroundColor);
   canvas->DrawRect(contents_rect, paint);
 
   if (app_list::switches::IsExperimentalAppListEnabled()) {
     if (main_view_->visible()) {
       views::View* contents_view = main_view_->contents_view();
       const gfx::Rect contents_view_view_bounds =
           contents_view->ConvertRectToWidget(contents_view->GetLocalBounds());
       gfx::Rect separator_rect(contents_rect);
-      separator_rect.set_y(contents_view_view_bounds.bottom());
+      // Extra kContentsSwitcherSeparatorHeight pixels so the launcher page
+      // indicator overlays the separator rect.
+      separator_rect.set_y(contents_view_view_bounds.bottom() +
+                           kContentsSwitcherSeparatorHeight);
       separator_rect.set_height(kBottomSeparatorSize);
       canvas->FillRect(separator_rect, kBottomSeparatorColor);
       int contents_switcher_top = separator_rect.bottom();
       gfx::Rect contents_switcher_rect(bounds.x(),
                                        contents_switcher_top,
                                        bounds.width(),
                                        bounds.bottom() - contents_switcher_top);
       paint.setColor(kContentsSwitcherBackgroundColor);
       canvas->DrawRect(contents_switcher_rect, paint);
     }
 
     // Draw a banner in the corner of the app list if it is the experimental app
     // list.
     const gfx::ImageSkia& experimental_icon =
         *ui::ResourceBundle::GetSharedInstance().GetImageSkiaNamed(
              IDR_APP_LIST_EXPERIMENTAL_ICON);
     canvas->DrawImageInt(experimental_icon,
                          contents_rect.right() - experimental_icon.width(),
                          contents_rect.bottom() - experimental_icon.height());
   }
 
   canvas->Restore();
 }
 
 }  // namespace app_list