Make const versions GetTemplateURLForKeyword, GetTemplateURLForGUID, GetTemplateURLForHost

ios/chrome/browser/ui/omnibox/chrome_omnibox_client_ios.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 IOS_CHROME_BROWSER_UI_OMNIBOX_CHROME_OMNIBOX_CLIENT_IOS_H_
 #define IOS_CHROME_BROWSER_UI_OMNIBOX_CHROME_OMNIBOX_CLIENT_IOS_H_
 
 #include <memory>
 
 #include "base/compiler_specific.h"
@@ skipping 27 matching lines @@
   bool IsSearchResultsPage() const override;
   bool IsNewTabPage(const std::string& url) const override;
   bool IsHomePage(const std::string& url) const override;
   const SessionID& GetSessionID() const override;
   bookmarks::BookmarkModel* GetBookmarkModel() override;
   TemplateURLService* GetTemplateURLService() override;
   const AutocompleteSchemeClassifier& GetSchemeClassifier() const override;
   AutocompleteClassifier* GetAutocompleteClassifier() override;
   gfx::Image GetIconIfExtensionMatch(
       const AutocompleteMatch& match) const override;
-  bool ProcessExtensionKeyword(TemplateURL* template_url,
+  bool ProcessExtensionKeyword(const TemplateURL* template_url,
                                const AutocompleteMatch& match,
                                WindowOpenDisposition disposition,
                                OmniboxNavigationObserver* observer) override;
   void OnInputStateChanged() override;
   void OnFocusChanged(OmniboxFocusState state,
                       OmniboxFocusChangeReason reason) override;
   void OnResultChanged(const AutocompleteResult& result,
                        bool default_match_changed,
                        const base::Callback<void(const SkBitmap& bitmap)>&
                            on_bitmap_fetched) override;
@@ skipping 14 matching lines @@
 
  private:
   WebOmniboxEditController* controller_;
   ios::ChromeBrowserState* browser_state_;
   AutocompleteSchemeClassifierImpl scheme_classifier_;
 
   DISALLOW_COPY_AND_ASSIGN(ChromeOmniboxClientIOS);
 };
 
 #endif  // IOS_CHROME_BROWSER_UI_OMNIBOX_CHROME_OMNIBOX_CLIENT_IOS_H_