Create gfx::Screen at startup for cast_shell

chromecast/browser/cast_browser_main_parts.cc

Index: chromecast/browser/cast_browser_main_parts.cc
diff --git a/chromecast/browser/cast_browser_main_parts.cc b/chromecast/browser/cast_browser_main_parts.cc
index f1dfbe33e4f0fa87bdf4b5e849af9bada29fd72f..254b49419a123c44a2d721169e31bc7714aeda85 100644
--- a/chromecast/browser/cast_browser_main_parts.cc
+++ b/chromecast/browser/cast_browser_main_parts.cc
@@ -40,6 +40,11 @@
 #include "net/android/network_change_notifier_factory_android.h"
 #endif
 
+#if defined(USE_AURA)
+#include "ui/aura/test/test_screen.h"
+#include "ui/gfx/screen.h"
+#endif
+
 namespace {
 
 #if !defined(OS_ANDROID)
@@ -194,6 +199,12 @@ int CastBrowserMainParts::PreCreateThreads() {
   if (!base::CreateDirectory(home_dir))
     return 1;
 #endif
+
+#if defined(USE_AURA)
+  DCHECK(!gfx::Screen::GetScreenByType(gfx::SCREEN_TYPE_NATIVE));

[lcwu1, 2015/03/25 20:32:28]

Let's add some comments explaining why we need to create a dummy screen here.

[halliwell, 2015/03/25 21:56:48]

Done.

+  gfx::Screen::SetScreenInstance(gfx::SCREEN_TYPE_NATIVE,
+                                 aura::TestScreen::Create(gfx::Size(0, 0)));
+#endif
   return 0;
 }