User Gesture plumbed from Renderer to Browser's FullscreenController::RequestToLockMouse.

content/browser/web_contents/web_contents_impl.cc

Index: content/browser/web_contents/web_contents_impl.cc
diff --git a/content/browser/web_contents/web_contents_impl.cc b/content/browser/web_contents/web_contents_impl.cc
index 928b7c1099eebc1cf49d1288a56bf3cc6b492940..9480b1d617d8d691e695e8187577fe9090b5979c 100644
--- a/content/browser/web_contents/web_contents_impl.cc
+++ b/content/browser/web_contents/web_contents_impl.cc
@@ -1005,9 +1005,9 @@ bool WebContentsImpl::IsFullscreenForCurrentTab() const {
   return delegate_ ? delegate_->IsFullscreenForTabOrPending(this) : false;
 }
 
-void WebContentsImpl::RequestToLockMouse() {
+void WebContentsImpl::RequestToLockMouse(bool user_gesture) {
   if (delegate_) {
-    delegate_->RequestToLockMouse(this);
+    delegate_->RequestToLockMouse(this, user_gesture);
   } else {
     GotResponseToLockMouseRequest(false);
   }