Convert location bar decorations to Material Design (Mac).

chrome/browser/ui/cocoa/location_bar/selected_keyword_decoration.h

Index: chrome/browser/ui/cocoa/location_bar/selected_keyword_decoration.h
diff --git a/chrome/browser/ui/cocoa/location_bar/selected_keyword_decoration.h b/chrome/browser/ui/cocoa/location_bar/selected_keyword_decoration.h
index 1c2a0f007f00eb642a7fe126e3375e9b12ee693e..23f8c140b67d3734d775c1b4dc5f8481dcf4ba1a 100644
--- a/chrome/browser/ui/cocoa/location_bar/selected_keyword_decoration.h
+++ b/chrome/browser/ui/cocoa/location_bar/selected_keyword_decoration.h
@@ -19,6 +19,9 @@ class SelectedKeywordDecoration : public BubbleDecoration {
   SelectedKeywordDecoration();
   ~SelectedKeywordDecoration() override;
 
+  // Return the color used to draw the SelectedKeywordDecoration in MD.
+  NSColor* GetBackgroundBorderColor() override;
+
   // Calculates appropriate full and partial label strings based on
   // inputs.
   void SetKeyword(const base::string16& keyword, bool is_extension_keyword);