Support the full-screen state when showing a chrome window

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>
 
@@ skipping 551 matching lines @@
       break;
     case ui::SHOW_STATE_MAXIMIZED:
       native_show_state = SW_SHOWMAXIMIZED;
       break;
     case ui::SHOW_STATE_MINIMIZED:
       native_show_state = SW_SHOWMINIMIZED;
       break;
     case ui::SHOW_STATE_NORMAL:
       native_show_state = SW_SHOWNORMAL;
       break;
+    case ui::SHOW_STATE_FULLSCREEN:
+      native_show_state = SW_SHOWNORMAL;
+      SetFullscreen(true);

[sky, 2015/05/19 04:20:04]

I'm a bit nervous about invoking this before the window is actually showing.

[joone, 2015/05/19 17:40:49]

When SetFullscreen is called after ShowWindow, we can see the transition from
windowed(black) to full screen.

+      break;
     default:
       native_show_state = delegate_->GetInitialShowState();
       break;
   }
 
   ShowWindow(hwnd(), native_show_state);
   // When launched from certain programs like bash and Windows Live Messenger,
   // show_state is set to SW_HIDE, so we need to correct that condition. We
   // don't just change show_state to SW_SHOWNORMAL because MSDN says we must
   // always first call ShowWindow with the specified value from STARTUPINFO,
@@ skipping 2150 matching lines @@
     SetWindowPos(hwnd(), NULL, 0, 0, 0, 0, flags | SWP_HIDEWINDOW);
     SetWindowPos(hwnd(), NULL, 0, 0, 0, 0, flags | SWP_SHOWWINDOW);
   }
   // WM_DWMCOMPOSITIONCHANGED is only sent to top level windows, however we want
   // to notify our children too, since we can have MDI child windows who need to
   // update their appearance.
   EnumChildWindows(hwnd(), &SendDwmCompositionChanged, NULL);
 }
 
 }  // namespace views