Revert of Remove setVoiceSearchSupported part of EmbeddedSearch SearchBox API.

chrome/browser/ui/search/search_model.h

Index: chrome/browser/ui/search/search_model.h
diff --git a/chrome/browser/ui/search/search_model.h b/chrome/browser/ui/search/search_model.h
index e7e701e3e7004b5f4cd09bd173fa9bf5283d1ad4..3e97cf2a981e95263101a45e9ae29d702733ab1d 100644
--- a/chrome/browser/ui/search/search_model.h
+++ b/chrome/browser/ui/search/search_model.h
@@ -24,7 +24,9 @@
  public:
   struct State {
     State();
-    State(const SearchMode& mode, InstantSupportState instant_support);
+    State(const SearchMode& mode,
+          InstantSupportState instant_support,
+          bool voice_search_supported);
 
     bool operator==(const State& rhs) const;
 
@@ -33,6 +35,9 @@
 
     // Does the current page support Instant?
     InstantSupportState instant_support;
+
+    // Does the current page support voice search?
+    bool voice_search_supported;
   };
 
   SearchModel();
@@ -59,6 +64,13 @@
     return state_.instant_support;
   }
 
+  // Sets the page voice search support state.  Change notifications are sent to
+  // observers.
+  void SetVoiceSearchSupported(bool supported);
+
+  // Gets the voice search support state of the page.
+  bool voice_search_supported() const { return state_.voice_search_supported; }
+
   // Add and remove observers.
   void AddObserver(SearchModelObserver* observer);
   void RemoveObserver(SearchModelObserver* observer);