Remove search::GetSearchTerms since it always returns empty string

components/toolbar/toolbar_model_impl.h

Index: components/toolbar/toolbar_model_impl.h
diff --git a/components/toolbar/toolbar_model_impl.h b/components/toolbar/toolbar_model_impl.h
index 4b823f6324bfc1f009173fe7fac866d22c08d897..45f098909e9426e5174e5c358a23afa4e4f31eab 100644
--- a/components/toolbar/toolbar_model_impl.h
+++ b/components/toolbar/toolbar_model_impl.h
@@ -17,10 +17,6 @@
 
 class ToolbarModelDelegate;
 
-namespace net {
-class X509Certificate;
-}
-
 // This class is the model used by the toolbar, location bar and autocomplete
 // edit.  It populates its states from the current navigation entry retrieved
 // from the navigation controller returned by GetNavigationController().
@@ -35,7 +31,6 @@ class ToolbarModelImpl : public ToolbarModel {
   base::string16 GetText() const override;
   base::string16 GetFormattedURL(size_t* prefix_end) const override;
   GURL GetURL() const override;
-  bool WouldPerformSearchTermReplacement(bool ignore_editing) const override;
   security_state::SecurityStateModel::SecurityLevel GetSecurityLevel(
       bool ignore_editing) const override;
   int GetIcon() const override;
@@ -43,12 +38,6 @@ class ToolbarModelImpl : public ToolbarModel {
   base::string16 GetEVCertName() const override;
   bool ShouldDisplayURL() const override;
 
-  // Returns search terms as in search::GetSearchTerms() if such terms should
-  // appear in the omnibox (i.e. the page is sufficiently secure, search term
-  // replacement is enabled, editing is not in progress, etc.).  If
-  // |ignore_editing| is true, the "editing not in progress" check is skipped.
-  base::string16 GetSearchTerms(bool ignore_editing) const;
-
   ToolbarModelDelegate* delegate_;
   const size_t max_url_display_chars_;