Switch AccessibilityMode to be a bitmap

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 7121a48b238344a62224d4065e1a23f2a2f4aa4f..dd15c93bec5bf6eb0b538c29ad102297e16e6623 100644
--- a/content/browser/renderer_host/render_widget_host_impl.cc
+++ b/content/browser/renderer_host/render_widget_host_impl.cc
@@ -935,7 +935,7 @@ void RenderWidgetHostImpl::StopHangMonitorTimeout() {
 }
 
 void RenderWidgetHostImpl::EnableFullAccessibilityMode() {
-  SetAccessibilityMode(AccessibilityModeComplete);
+  SetAccessibilityMode(accessibility_mode_ | AccessibilityModeComplete);
 }
 
 void RenderWidgetHostImpl::ForwardMouseEvent(const WebMouseEvent& mouse_event) {
@@ -2145,7 +2145,7 @@ void RenderWidgetHostImpl::SetEditCommandsForNextKeyEvent(
   Send(new InputMsg_SetEditCommandsForNextKeyEvent(GetRoutingID(), commands));
 }
 
-void RenderWidgetHostImpl::SetAccessibilityMode(AccessibilityMode mode) {
+void RenderWidgetHostImpl::SetAccessibilityMode(unsigned int mode) {
   accessibility_mode_ = mode;
   Send(new ViewMsg_SetAccessibilityMode(GetRoutingID(), mode));
 }