Fix a painting bug which occurred due to the change which reduces the size of the fullscreen chrome…

ui/views/win/hwnd_message_handler.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/views/win/hwnd_message_handler.h"
 
 #include <dwmapi.h>
 #include <oleacc.h>
 #include <shellapi.h>
 #include <tchar.h>
@@ skipping 1025 matching lines @@
       GetMonitorInfo(MonitorFromWindow(hwnd(), MONITOR_DEFAULTTOPRIMARY),
                       &monitor_info);
       gfx::Rect shrunk_rect(monitor_info.rcMonitor);
       shrunk_rect.set_height(shrunk_rect.height() - 1);
       background_fullscreen_hack_ = true;
       SetBoundsInternal(shrunk_rect, false);
     }
   } else if (background_fullscreen_hack_) {
     // Restore the bounds of the window to fullscreen.
     DCHECK(IsFullscreen());
-    background_fullscreen_hack_ = false;
     MONITORINFO monitor_info = {sizeof(monitor_info)};
     GetMonitorInfo(MonitorFromWindow(hwnd(), MONITOR_DEFAULTTOPRIMARY),
                    &monitor_info);
     SetBoundsInternal(gfx::Rect(monitor_info.rcMonitor), false);
+    background_fullscreen_hack_ = false;
   }
 }
 
 void HWNDMessageHandler::RestoreEnabledIfNecessary() {
   if (delegate_->IsModal() && !restored_enabled_) {
     restored_enabled_ = true;
     // If we were run modally, we need to undo the disabled-ness we inflicted on
     // the owner's parent hierarchy.
     HWND start = ::GetWindow(hwnd(), GW_OWNER);
     while (start) {
@@ skipping 1568 matching lines @@
     delegate_->HandleClientSizeChanged(GetClientAreaBounds().size());
     ResetWindowRegion(false, true);
   }
 
   if (direct_manipulation_helper_)
     direct_manipulation_helper_->SetBounds(bounds_in_pixels);
 }
 
 
 }  // namespace views