aura: Allow specifying the size of TestScreen when creating it.

ui/views_content_client/views_content_client_main_parts_chromeos.cc

Index: ui/views_content_client/views_content_client_main_parts_chromeos.cc
diff --git a/ui/views_content_client/views_content_client_main_parts_chromeos.cc b/ui/views_content_client/views_content_client_main_parts_chromeos.cc
index 265ba095940138f517c2fe615cea6c3e596eca22..b1ba000db33cfdd84efdfec6b8f94f5e524580e4 100644
--- a/ui/views_content_client/views_content_client_main_parts_chromeos.cc
+++ b/ui/views_content_client/views_content_client_main_parts_chromeos.cc
@@ -62,11 +62,12 @@ ViewsContentClientMainPartsChromeOS::ViewsContentClientMainPartsChromeOS(
 void ViewsContentClientMainPartsChromeOS::PreMainMessageLoopRun() {
   ViewsContentClientMainPartsAura::PreMainMessageLoopRun();
 
-  gfx::Screen::SetScreenInstance(
-      gfx::SCREEN_TYPE_NATIVE, aura::TestScreen::Create());
+  gfx::Size host_size(800, 600);
+  gfx::Screen::SetScreenInstance(gfx::SCREEN_TYPE_NATIVE,
+                                 aura::TestScreen::Create(host_size));

[sky, 2014/06/19 14:51:08]

Same question here about leaking.

   // Set up basic pieces of views::corewm.
-  wm_test_helper_.reset(new ::wm::WMTestHelper(gfx::Size(800, 600),
-                                               content::GetContextFactory()));
+  wm_test_helper_.reset(
+      new ::wm::WMTestHelper(host_size, content::GetContextFactory()));
   // Ensure the X window gets mapped.
   wm_test_helper_->host()->Show();