Implement put_accvalue for textfields and location bar.

chrome/browser/ui/views/location_bar/location_bar_view.h

Index: chrome/browser/ui/views/location_bar/location_bar_view.h
diff --git a/chrome/browser/ui/views/location_bar/location_bar_view.h b/chrome/browser/ui/views/location_bar/location_bar_view.h
index f846263ee5ca6f42175fc61baafb1a53c878f243..12d38440c6ca0dba1d7e86160f44bba34843b760 100644
--- a/chrome/browser/ui/views/location_bar/location_bar_view.h
+++ b/chrome/browser/ui/views/location_bar/location_bar_view.h
@@ -9,6 +9,7 @@
 #include <vector>
 
 #include "base/compiler_specific.h"
+#include "base/memory/weak_ptr.h"
 #include "base/prefs/pref_member.h"
 #include "chrome/browser/extensions/extension_context_menu_model.h"
 #include "chrome/browser/search_engines/template_url_service_observer.h"
@@ -422,6 +423,11 @@ class LocationBarView : public LocationBar,
   // after layout, so the |page_action_views_| have their bounds.
   void PaintPageActionBackgrounds(gfx::Canvas* canvas);
 
+  // Handles a request to change the value of this text field from software
+  // using an accessibility API (typically automation software, screen readers
+  // don't normally use this). Sets the value and clears the selection.
+  void AccessibilitySetValue(const string16& new_value);
+
   // The Browser this LocationBarView is in.  Note that at least
   // chromeos::SimpleWebViewDialog uses a LocationBarView outside any browser
   // window, so this may be NULL.
@@ -534,6 +540,9 @@ class LocationBarView : public LocationBar,
   // Used to register for notifications received by NotificationObserver.
   content::NotificationRegistrar registrar_;
 
+  // Used to bind callback functions to this object.
+  base::WeakPtrFactory<LocationBarView> weak_ptr_factory_;
+
   DISALLOW_COPY_AND_ASSIGN(LocationBarView);
 };