Instant API: tell page whether the browser is capturing key strokes.

chrome/renderer/searchbox/searchbox.h

Index: chrome/renderer/searchbox/searchbox.h
diff --git a/chrome/renderer/searchbox/searchbox.h b/chrome/renderer/searchbox/searchbox.h
index cf3d01df1916a29ffdbfeae31c3bdac86a2a1cf3..351316c6c94c93a49d9c0c17ebb742fffe76f053 100644
--- a/chrome/renderer/searchbox/searchbox.h
+++ b/chrome/renderer/searchbox/searchbox.h
@@ -45,6 +45,7 @@ class SearchBox : public content::RenderViewObserver,
   size_t selection_end() const { return selection_end_; }
   int results_base() const { return results_base_; }
   const chrome::search::Mode& mode() const { return mode_; }
+  bool is_key_capture_enabled() const { return is_key_capture_enabled_; }
   bool display_instant_results() const { return display_instant_results_; }
 
   gfx::Rect GetRect();
@@ -71,6 +72,7 @@ class SearchBox : public content::RenderViewObserver,
   void OnAutocompleteResults(
       const std::vector<InstantAutocompleteResult>& results);
   void OnUpOrDownKeyPressed(int count);
+  void OnKeyCaptureChange(bool is_key_capture_enabled);
   void OnModeChanged(const chrome::search::Mode& mode);
   void OnSetDisplayInstantResults(bool display_instant_results);
   void OnThemeChanged(const ThemeBackgroundInfo& theme_info);
@@ -88,6 +90,7 @@ class SearchBox : public content::RenderViewObserver,
   std::vector<InstantAutocompleteResult> autocomplete_results_;
   size_t last_results_base_;
   std::vector<InstantAutocompleteResult> last_autocomplete_results_;
+  bool is_key_capture_enabled_;
   chrome::search::Mode mode_;
   ThemeBackgroundInfo theme_info_;
   int theme_area_height_;