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 ca16dbc5e4cde46ccce7b5342d846f2f953eb2dd..184995d881f3799016c22a751ba466ff78d4f2c9 100644
--- a/content/browser/renderer_host/render_widget_host_impl.h
+++ b/content/browser/renderer_host/render_widget_host_impl.h
@@ -19,6 +19,7 @@
 #include "base/string16.h"
 #include "base/timer.h"
 #include "build/build_config.h"
+#include "content/common/view_message_enums.h"
 #include "content/public/browser/render_widget_host.h"
 #include "content/public/common/page_zoom.h"
 #include "ui/base/ime/text_input_type.h"
@@ -89,7 +90,7 @@ class CONTENT_EXPORT RenderWidgetHostImpl : virtual public RenderWidgetHost,
   virtual bool CopyFromBackingStoreToCGContext(const CGRect& dest_rect,
                                                CGContextRef target) OVERRIDE;
 #endif
-  virtual void EnableRendererAccessibility() OVERRIDE;
+  virtual void EnableFullAccessibilityMode() OVERRIDE;
   virtual void ForwardMouseEvent(
       const WebKit::WebMouseEvent& mouse_event) OVERRIDE;
   virtual void ForwardWheelEvent(
@@ -118,7 +119,6 @@ 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(); }
 
@@ -293,6 +293,9 @@ class CONTENT_EXPORT RenderWidgetHostImpl : virtual public RenderWidgetHost,
   void SetEditCommandsForNextKeyEvent(
       const std::vector<EditCommand>& commands);
 
+  // Send a message to the renderer process to change the accessibility mode.
+  void SetAccessibilityMode(AccessibilityMode mode);
+
   // Relay a request from assistive technology to perform the default action
   // on a given node.
   void AccessibilityDoDefaultAction(int object_id);
@@ -545,10 +548,6 @@ 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_;