Test that OmniboxViewViews has opaque background.

chrome/browser/ui/views/omnibox/omnibox_view_views_browsertest.cc

 // Copyright (c) 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 "chrome/browser/ui/views/omnibox/omnibox_view_views.h"
 
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_commands.h"
 #include "chrome/browser/ui/browser_window.h"
 #include "chrome/browser/ui/omnibox/location_bar.h"
@@ skipping 215 matching lines @@
   EXPECT_FALSE(omnibox_view->IsSelectAll());
 
   // Pressing tab to focus the omnibox should select all text.
   while (!ui_test_utils::IsViewFocused(browser(), VIEW_ID_OMNIBOX)) {
     ASSERT_TRUE(ui_test_utils::SendKeyPressSync(browser(), ui::VKEY_TAB,
                                                 false, false, false, false));
   }
   EXPECT_TRUE(ui_test_utils::IsViewFocused(browser(), VIEW_ID_OMNIBOX));
   EXPECT_TRUE(omnibox_view->IsSelectAll());
 }
+
+#if defined(OS_CHROMEOS)

[Peter Kasting, 2014/05/06 21:28:33]

Why CrOS-only?  Doesn't this affect other platforms too?

[Daniel Erat, 2014/05/07 18:43:02]

chrome os is the only platform where i've heard this concern, but you're right,
RenderTextWin also checks the background's transparency. done.

+IN_PROC_BROWSER_TEST_F(OmniboxViewViewsTest, BackgroundIsOpaque) {
+  // The omnibox text should be rendered on an opaque background. Otherwise,
+  // Chrome OS is unable to use subpixel rendering: http://crbug.com/233364
+  OmniboxView* view = browser()->window()->GetLocationBar()->GetOmniboxView();
+  EXPECT_FALSE(static_cast<OmniboxViewViews*>(view)->
+      GetRenderTextForTesting()->background_is_transparent());
+}
+#endif