Remove setVoiceSearchSupported part of EmbeddedSearch SearchBox API.

chrome/browser/ui/search/search_tab_helper.h

Index: chrome/browser/ui/search/search_tab_helper.h
diff --git a/chrome/browser/ui/search/search_tab_helper.h b/chrome/browser/ui/search/search_tab_helper.h
index 0db812788c6fb8edd5478b05ac99fc4ffd33b2c2..6c5bea98d2a25af137a3f4d9d5ec3167fa5ff33f 100644
--- a/chrome/browser/ui/search/search_tab_helper.h
+++ b/chrome/browser/ui/search/search_tab_helper.h
@@ -90,9 +90,6 @@ class SearchTabHelper : public content::WebContentsObserver,
   // Called when the tab corresponding to |this| instance is deactivated.
   void OnTabDeactivated();
 
-  // Tells the page to toggle voice search.
-  void ToggleVoiceSearch();
-
   // Returns true if the underlying page is a search results page.
   bool IsSearchResultsPage();
 
@@ -158,7 +155,6 @@ class SearchTabHelper : public content::WebContentsObserver,
 
   // Overridden from SearchIPCRouter::Delegate:
   void OnInstantSupportDetermined(bool supports_instant) override;
-  void OnSetVoiceSearchSupport(bool supports_voice_search) override;
   void FocusOmnibox(OmniboxFocusState state) override;
   void NavigateToURL(const GURL& url,
                      WindowOpenDisposition disposition,