[Mac][Material Design] Update Omnibox dropdown on Mac to MD

chrome/browser/ui/cocoa/omnibox/omnibox_popup_view_mac.h

Index: chrome/browser/ui/cocoa/omnibox/omnibox_popup_view_mac.h
diff --git a/chrome/browser/ui/cocoa/omnibox/omnibox_popup_view_mac.h b/chrome/browser/ui/cocoa/omnibox/omnibox_popup_view_mac.h
index 5d6c1b422f5e7d3001230cf91fe973da7ffad70e..7c5d1914531a3b2e4a9612f599d75015818d6288 100644
--- a/chrome/browser/ui/cocoa/omnibox/omnibox_popup_view_mac.h
+++ b/chrome/browser/ui/cocoa/omnibox/omnibox_popup_view_mac.h
@@ -27,6 +27,8 @@ class OmniboxView;
 class OmniboxPopupViewMac : public OmniboxPopupView,
                             public OmniboxPopupMatrixObserver {
  public:
+  // Return the OmniboxPopupViewMac background color.
+  static NSColor* BackgroundColor(BOOL is_dark_theme);

[tapted, 2016/04/28 14:29:44]

hm - I think constructors come before static methods - had that as a review
comment in one of my own CLs recently :)

Also it's weird seeing an ObjC "BOOL" here - perhaps bool? But BOOL is perhaps
more consistent too for this particular var

[shrike, 2016/04/28 21:05:35]

Done.

   OmniboxPopupViewMac(OmniboxView* omnibox_view,
                       OmniboxEditModel* edit_model,
                       NSTextField* field);
@@ -50,7 +52,8 @@ class OmniboxPopupViewMac : public OmniboxPopupView,
                                 size_t row) override;
 
   // Returns the NSImage that should be used as an icon for the given match.
-  NSImage* ImageForMatch(const AutocompleteMatch& match) const;
+  NSImage* ImageForMatch(const AutocompleteMatch& match,
+                         BOOL ignore_dark_theme) const;
 
   OmniboxPopupMatrix* matrix() { return matrix_; }