[Web Intents] Basic location bar UI for window disposition picker affordance.

chrome/browser/ui/omnibox/location_bar.h

Index: chrome/browser/ui/omnibox/location_bar.h
diff --git a/chrome/browser/ui/omnibox/location_bar.h b/chrome/browser/ui/omnibox/location_bar.h
index b3c21cb14a2822bd67576ec5224014d9918303fd..8bdb59e8bf2fd1ed16b9359dd56aa98d8109d82d 100644
--- a/chrome/browser/ui/omnibox/location_bar.h
+++ b/chrome/browser/ui/omnibox/location_bar.h
@@ -67,6 +67,9 @@ class LocationBar {
   // extension is unloaded or crashes.
   virtual void InvalidatePageActions() = 0;
 
+  // Updates the state of the web intents use-another-service button.
+  virtual void UpdateWebIntentsButton() = 0;
+
   // Saves the state of the location bar to the specified WebContents, so that
   // it can be restored later. (Done when switching tabs).
   virtual void SaveStateToContents(content::WebContents* contents) = 0;