Fix extension toolstrip background update code

chrome/browser/views/frame/browser_view.cc

 // Copyright (c) 2009 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/views/frame/browser_view.h"
 
 #include "app/drag_drop_types.h"
 #include "app/gfx/canvas.h"
 #include "app/l10n_util.h"
 #include "app/os_exchange_data.h"
@@ skipping 145 matching lines @@
     // Draw the background to match the new tab page.
     DetachableToolbarView::PaintBackgroundDetachedMode(canvas, host_view_);
 
     SkRect rect;
 
     // As 'hidden' according to the animation is the full in-tab state,
     // we invert the value - when current_state is at '0', we expect the
     // bar to be docked.
     double current_state = 1 - host_view_->GetAnimationValue();
 
-    // The 0.5 is to correct for Skia's "draw on pixel boundaries"ness.
     double h_padding = static_cast<double>
         (BookmarkBarView::kNewtabHorizontalPadding) * current_state;
     double v_padding = static_cast<double>
         (BookmarkBarView::kNewtabVerticalPadding) * current_state;
     double roundness = 0;
 
     DetachableToolbarView::CalculateContentArea(current_state,
                                                 h_padding, v_padding,
                                                 &rect, &roundness, host_view_);
     DetachableToolbarView::PaintContentAreaBackground(
@@ skipping 1979 matching lines @@
 
 // static
 FindBar* BrowserWindow::CreateFindBar(Browser* browser) {
   return browser::CreateFindBar(static_cast<BrowserView*>(browser->window()));
 }
 
 // static
 void BrowserList::AllBrowsersClosed() {
   views::Window::CloseAllSecondaryWindows();
 }