[MD] Implement incognito colors as a NativeTheme (for Aura).

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

Index: chrome/browser/ui/views/omnibox/omnibox_popup_contents_view.cc
diff --git a/chrome/browser/ui/views/omnibox/omnibox_popup_contents_view.cc b/chrome/browser/ui/views/omnibox/omnibox_popup_contents_view.cc
index c97ddb9beae5b0be99137747c4f51d72a7dcaffd..9a0a3cce041f02e0681d2250cf16a04c619ec0f5 100644
--- a/chrome/browser/ui/views/omnibox/omnibox_popup_contents_view.cc
+++ b/chrome/browser/ui/views/omnibox/omnibox_popup_contents_view.cc
@@ -31,10 +31,18 @@ class OmniboxPopupContentsView::AutocompletePopupWidget
     : public views::Widget,
       public base::SupportsWeakPtr<AutocompletePopupWidget> {
  public:
-  AutocompletePopupWidget() {}
+  explicit AutocompletePopupWidget(views::Widget* popup_parent)
+      : popup_parent_(popup_parent) {}
   ~AutocompletePopupWidget() override {}
 
+  const ui::NativeTheme* GetNativeTheme() const override {
+    return popup_parent_->GetNativeTheme();
+  }
+
  private:
+  // The transient parent of this popup.
+  views::Widget* popup_parent_;

[Peter Kasting, 2015/11/14 02:46:08]

Nit: Just call this |parent_| since "popup" is already in the class name
"AutocompletePopupWidget".

[Evan Stade, 2015/11/16 19:36:33]

this change reverted

+
   DISALLOW_COPY_AND_ASSIGN(AutocompletePopupWidget);
 };
 
@@ -237,7 +245,7 @@ void OmniboxPopupContentsView::UpdatePopupAppearance() {
     views::Widget* popup_parent = location_bar_view_->GetWidget();
 
     // If the popup is currently closed, we need to create it.
-    popup_ = (new AutocompletePopupWidget)->AsWeakPtr();
+    popup_ = (new AutocompletePopupWidget(popup_parent))->AsWeakPtr();
 
     views::Widget::InitParams params(views::Widget::InitParams::TYPE_POPUP);
 #if defined(OS_WIN)