Move some accessibility methods, enums and interfaces into the content/public API.

content/browser/renderer_host/render_widget_host_impl.cc

Index: content/browser/renderer_host/render_widget_host_impl.cc
diff --git a/content/browser/renderer_host/render_widget_host_impl.cc b/content/browser/renderer_host/render_widget_host_impl.cc
index 72d461fa6a3788c518d76b8009ff310822b6c9a8..f3b09f181ad6a54f65eabbc051158289b7cbff95 100644
--- a/content/browser/renderer_host/render_widget_host_impl.cc
+++ b/content/browser/renderer_host/render_widget_host_impl.cc
@@ -42,6 +42,7 @@
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/notification_types.h"
 #include "content/public/browser/user_metrics.h"
+#include "content/public/common/accessibility_mode.h"
 #include "content/public/common/content_constants.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/common/result_codes.h"
@@ -803,10 +804,6 @@ void RenderWidgetHostImpl::StopHangMonitorTimeout() {
   // started again shortly, which happens to be the common use case.
 }
 
-void RenderWidgetHostImpl::EnableFullAccessibilityMode() {
-  SetAccessibilityMode(AccessibilityModeComplete);
-}
-
 static WebGestureEvent MakeGestureEvent(WebInputEvent::Type type,
                                         double timestamp_seconds,
                                         int x,
@@ -2190,6 +2187,10 @@ void RenderWidgetHostImpl::SetEditCommandsForNextKeyEvent(
   Send(new ViewMsg_SetEditCommandsForNextKeyEvent(GetRoutingID(), commands));
 }
 
+AccessibilityMode RenderWidgetHostImpl::GetAccessibilityMode() const {
+  return accessibility_mode_;
+}
+
 void RenderWidgetHostImpl::SetAccessibilityMode(AccessibilityMode mode) {
   Send(new ViewMsg_SetAccessibilityMode(routing_id_, mode));
 }