Implement Android accessible hit testing using an IPC to the renderer process.

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 d2237e20bebe5d26de71a8017f7591df98b1840c..c72ad65d27a8f7d8a539ed5b04378156139ec4bd 100644
--- a/content/browser/renderer_host/render_widget_host_impl.cc
+++ b/content/browser/renderer_host/render_widget_host_impl.cc
@@ -2022,6 +2022,10 @@ gfx::Point RenderWidgetHostImpl::AccessibilityOriginInScreen(
   return view_->AccessibilityOriginInScreen(bounds);
 }
 
+void RenderWidgetHostImpl::AccessibilityHitTest(const gfx::Point& point) {
+  Send(new AccessibilityMsg_HitTest(GetRoutingID(), point));
+}
+
 void RenderWidgetHostImpl::AccessibilityFatalError() {
   Send(new AccessibilityMsg_FatalError(GetRoutingID()));
   view_->SetBrowserAccessibilityManager(NULL);