Implement pointer lock API for out-of-process iframes.

content/renderer/render_widget_fullscreen.cc

Index: content/renderer/render_widget_fullscreen.cc
diff --git a/content/renderer/render_widget_fullscreen.cc b/content/renderer/render_widget_fullscreen.cc
index accfe58f1ed51a6f820dcdb4de1e812d50cf2023..09404827eb553b6e2e4e0e38d972c3ea51df37a9 100644
--- a/content/renderer/render_widget_fullscreen.cc
+++ b/content/renderer/render_widget_fullscreen.cc
@@ -45,7 +45,7 @@ bool RenderWidgetFullscreen::Init(int32_t opener_id) {
 
   bool success = RenderWidget::DoInit(
       opener_id, CreateWebWidget(),
-      new ViewHostMsg_CreateFullscreenWidget(opener_id, &routing_id_));
+      new ViewHostMsg_CreateFullscreenWidget(opener_id, &routing_id_), true);
   if (success) {
     // TODO(fsamuel): This is a bit ugly. The |create_widget_message| should
     // probably be factored out of RenderWidget::DoInit.