Test that OmniboxViewViews has opaque background.

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

Index: chrome/browser/ui/views/omnibox/omnibox_view_views_browsertest.cc
diff --git a/chrome/browser/ui/views/omnibox/omnibox_view_views_browsertest.cc b/chrome/browser/ui/views/omnibox/omnibox_view_views_browsertest.cc
index acb72528c2c73cc3562358dccdf152b05c6c961f..3b2e25bd2083a36532eb2260d80b1005f55ada9c 100644
--- a/chrome/browser/ui/views/omnibox/omnibox_view_views_browsertest.cc
+++ b/chrome/browser/ui/views/omnibox/omnibox_view_views_browsertest.cc
@@ -233,3 +233,13 @@ IN_PROC_BROWSER_TEST_F(OmniboxViewViewsTest, SelectAllOnTabToFocus) {
   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