Fixed incorrect frame insets for app windows on ChromeOS

ash/wm/header_painter.cc

 // Copyright 2013 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 "ash/wm/header_painter.h"
 
 #include <vector>
 
 #include "ash/wm/caption_buttons/frame_caption_button_container_view.h"
 #include "base/logging.h"  // DCHECK
@@ skipping 167 matching lines @@
   client_bounds.Inset(0, header_height, 0, 0);
   return client_bounds;
 }
 
 // static
 gfx::Rect HeaderPainter::GetWindowBoundsForClientBounds(
       int header_height,
       const gfx::Rect& client_bounds) {
   gfx::Rect window_bounds(client_bounds);
   window_bounds.Inset(0, -header_height, 0, 0);
-  if (window_bounds.y() < 0)
-    window_bounds.set_y(0);
   return window_bounds;
 }
 
 int HeaderPainter::NonClientHitTest(const gfx::Point& point) const {
   gfx::Point point_in_header_view(point);
   views::View::ConvertPointFromWidget(header_view_, &point_in_header_view);
   if (!GetHeaderLocalBounds().Contains(point_in_header_view))
     return HTNOWHERE;
   if (caption_button_container_->visible()) {
     gfx::Point point_in_caption_button_container(point);
@@ skipping 418 matching lines @@
   int title_y =
       GetCaptionButtonContainerCenterY() - title_font_list.GetHeight() / 2;
   return gfx::Rect(
       title_x,
       std::max(0, title_y),
       std::max(0, caption_button_container_->x() - kTitleLogoSpacing - title_x),
       title_font_list.GetHeight());
 }
 
 }  // namespace ash