Revert of Remove setVoiceSearchSupported part of EmbeddedSearch SearchBox API.

chrome/browser/ui/search/search_ipc_router_policy_impl.h

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_UI_SEARCH_SEARCH_IPC_ROUTER_POLICY_IMPL_H_
 #define CHROME_BROWSER_UI_SEARCH_SEARCH_IPC_ROUTER_POLICY_IMPL_H_
 
 #include "chrome/browser/ui/search/search_ipc_router.h"
 
 namespace content {
 class WebContents;
 }
 
 // The SearchIPCRouter::Policy implementation.
 class SearchIPCRouterPolicyImpl : public SearchIPCRouter::Policy {
  public:
   explicit SearchIPCRouterPolicyImpl(const content::WebContents* web_contents);
   ~SearchIPCRouterPolicyImpl() override;
 
  private:
   friend class SearchIPCRouterPolicyTest;
 
   // Overridden from SearchIPCRouter::Policy:
+  bool ShouldProcessSetVoiceSearchSupport() override;
   bool ShouldProcessFocusOmnibox(bool is_active_tab) override;
   bool ShouldProcessNavigateToURL(bool is_active_tab) override;
   bool ShouldProcessDeleteMostVisitedItem() override;
   bool ShouldProcessUndoMostVisitedDeletion() override;
   bool ShouldProcessUndoAllMostVisitedDeletions() override;
   bool ShouldProcessLogEvent() override;
   bool ShouldProcessPasteIntoOmnibox(bool is_active_tab) override;
   bool ShouldProcessChromeIdentityCheck() override;
   bool ShouldProcessHistorySyncCheck() override;
   bool ShouldSendSetPromoInformation() override;
   bool ShouldSendSetDisplayInstantResults() override;
   bool ShouldSendSetSuggestionToPrefetch() override;
   bool ShouldSendSetOmniboxStartMargin() override;
   bool ShouldSendSetInputInProgress(bool is_active_tab) override;
   bool ShouldSendOmniboxFocusChanged() override;
   bool ShouldSendMostVisitedItems() override;
   bool ShouldSendThemeBackgroundInfo() override;
+  bool ShouldSendToggleVoiceSearch() override;
   bool ShouldSubmitQuery() override;
 
   // Used by unit tests.
   void set_is_incognito(bool is_incognito) {
     is_incognito_ = is_incognito;
   }
 
   const content::WebContents* web_contents_;
   bool is_incognito_;
 
   DISALLOW_COPY_AND_ASSIGN(SearchIPCRouterPolicyImpl);
 };
 
 #endif  // CHROME_BROWSER_UI_SEARCH_SEARCH_IPC_ROUTER_POLICY_IMPL_H_