Add an accessibility mode for editable text fields only.

content/browser/renderer_host/render_widget_host_impl.h

Index: content/browser/renderer_host/render_widget_host_impl.h
diff --git a/content/browser/renderer_host/render_widget_host_impl.h b/content/browser/renderer_host/render_widget_host_impl.h
index 7ccf1b5d057bb7b5675cfe4df54f60337c0f9233..8d3b5c9584405d1a0a81be7047676b2519afc791 100644
--- a/content/browser/renderer_host/render_widget_host_impl.h
+++ b/content/browser/renderer_host/render_widget_host_impl.h
@@ -89,7 +89,7 @@ class CONTENT_EXPORT RenderWidgetHostImpl : virtual public RenderWidgetHost,
   virtual bool CopyFromBackingStoreToCGContext(const CGRect& dest_rect,
                                                CGContextRef target) OVERRIDE;
 #endif
-  virtual void EnableRendererAccessibility() OVERRIDE;
+  virtual void SetAccessibilityMode(AccessibilityMode mode) OVERRIDE;
   virtual void ForwardMouseEvent(
       const WebKit::WebMouseEvent& mouse_event) OVERRIDE;
   virtual void ForwardWheelEvent(
@@ -118,7 +118,6 @@ class CONTENT_EXPORT RenderWidgetHostImpl : virtual public RenderWidgetHost,
   void SetView(RenderWidgetHostView* view);
 
   int surface_id() const { return surface_id_; }
-  bool renderer_accessible() { return renderer_accessible_; }
 
   bool empty() const { return current_size_.IsEmpty(); }
 
@@ -545,10 +544,6 @@ class CONTENT_EXPORT RenderWidgetHostImpl : virtual public RenderWidgetHost,
   // The ID of the corresponding object in the Renderer Instance.
   int routing_id_;
 
-  // True if renderer accessibility is enabled. This should only be set when a
-  // screenreader is detected as it can potentially slow down Chrome.
-  bool renderer_accessible_;
-
   // Stores random bits of data for others to associate with this object.
   base::PropertyBag property_bag_;