Check the root frame pointer events as well for capture

third_party/WebKit/Source/core/events/PointerEventFactory.h

Index: third_party/WebKit/Source/core/events/PointerEventFactory.h
diff --git a/third_party/WebKit/Source/core/events/PointerEventFactory.h b/third_party/WebKit/Source/core/events/PointerEventFactory.h
index 20ec49fe4388c9d98aa5a1b52a59a2cc41239da2..c914ca2444d891d5e05e1f8985b85e6fe0b97ba1 100644
--- a/third_party/WebKit/Source/core/events/PointerEventFactory.h
+++ b/third_party/WebKit/Source/core/events/PointerEventFactory.h
@@ -73,6 +73,11 @@ class CORE_EXPORT PointerEventFactory {
   // properties if exists otherwise s_invalidId.
   int getPointerEventId(const WebPointerProperties&) const;
 
+  // Returns the pointer type of the active pointer event corresponding to
+  // the give pointerId. If there is no matching active pointer it returns
+  // WebPointerProperties::PointerType::Unknown.
+  WebPointerProperties::PointerType getPointerType(int pointerId) const;
+
   static const int s_mouseId;
 
  private:
@@ -81,7 +86,10 @@ class CORE_EXPORT PointerEventFactory {
     IncomingId() {}
     IncomingId(WebPointerProperties::PointerType pointerType, int rawId)
         : std::pair<int, int>(static_cast<int>(pointerType), rawId) {}
-    int pointerType() const { return first; }
+    int pointerTypeInt() const { return first; }
+    WebPointerProperties::PointerType pointerType() const {
+      return static_cast<WebPointerProperties::PointerType>(first);
+    }
     int rawId() const { return second; }
   } IncomingId;
   typedef struct PointerAttributes {