No pointer captured when the pointer lock is applied

third_party/WebKit/Source/core/dom/Element.cpp

Index: third_party/WebKit/Source/core/dom/Element.cpp
diff --git a/third_party/WebKit/Source/core/dom/Element.cpp b/third_party/WebKit/Source/core/dom/Element.cpp
index 585beca84fb915bb397971818812de64b35f9488..6af0d0f60234672acf34fe6d4d9c24855c72361c 100644
--- a/third_party/WebKit/Source/core/dom/Element.cpp
+++ b/third_party/WebKit/Source/core/dom/Element.cpp
@@ -3029,12 +3029,17 @@ void Element::insertAdjacentHTML(const String& where,
 
 void Element::setPointerCapture(int pointerId, ExceptionState& exceptionState) {
   if (document().frame()) {
-    if (!document().frame()->eventHandler().isPointerEventActive(pointerId))
+    if (!document().frame()->eventHandler().isPointerEventActive(pointerId)) {
       exceptionState.throwDOMException(InvalidPointerId, "InvalidPointerId");
-    else if (!isConnected())
+    } else if (!isConnected()) {
       exceptionState.throwDOMException(InvalidStateError, "InvalidStateError");
-    else
+    } else if (document().page() &&
+               document().page()->pointerLockController().element()) {
+      exceptionState.throwDOMException(
+          InvalidStateError, "Cannot capture when the mouse is locked");

[Navid Zolghadr, 2017/04/10 17:16:14]

I believe we need to put the error in pointer event spec. Maybe using the same
invalidStateError?

[lanwei, 2017/05/17 13:56:00]

Done.

+    } else {
       document().frame()->eventHandler().setPointerCapture(pointerId, this);
+    }
   }
 }