Test that OmniboxViewViews has opaque background.

chrome/browser/ui/views/omnibox/omnibox_view_views.h

Index: chrome/browser/ui/views/omnibox/omnibox_view_views.h
diff --git a/chrome/browser/ui/views/omnibox/omnibox_view_views.h b/chrome/browser/ui/views/omnibox/omnibox_view_views.h
index 1b71318cda58998da2eb0e0aacaab87601d412fa..1b3dde9318e604bd0a51add66609680694fed89a 100644
--- a/chrome/browser/ui/views/omnibox/omnibox_view_views.h
+++ b/chrome/browser/ui/views/omnibox/omnibox_view_views.h
@@ -26,6 +26,7 @@ class OmniboxPopupView;
 class Profile;
 
 namespace gfx {
+class RenderText;
 class SlideAnimation;
 }
 
@@ -33,7 +34,7 @@ namespace ui {
 class OSExchangeData;
 }  // namespace ui
 
-// Views-implementation of OmniboxView, based on the gtk implementation.
+// Views-implementation of OmniboxView.
 class OmniboxViewViews
     : public OmniboxView,
       public views::Textfield,
@@ -61,6 +62,13 @@ class OmniboxViewViews
   // Starts an animation that fades in the entire OmniboxView.
   void FadeIn();
 
+  // Exposes the RenderText for tests.
+#if defined(UNIT_TEST)
+  gfx::RenderText* GetRenderText() {
+    return views::Textfield::GetRenderText();
+  }
+#endif
+
   // View:
   virtual void OnNativeThemeChanged(const ui::NativeTheme* theme) OVERRIDE;