Add pointer id to the WebMouseEvent's constructors

third_party/WebKit/public/platform/WebPointerProperties.h

Index: third_party/WebKit/public/platform/WebPointerProperties.h
diff --git a/third_party/WebKit/public/platform/WebPointerProperties.h b/third_party/WebKit/public/platform/WebPointerProperties.h
index 2a453cd22fd7ae5b7a0fc193ec751f6fb9f5aa28..7f1612f04deb94f65c0829b5c5dbbcdfc118f53f 100644
--- a/third_party/WebKit/public/platform/WebPointerProperties.h
+++ b/third_party/WebKit/public/platform/WebPointerProperties.h
@@ -46,8 +46,8 @@ class WebPointerProperties {
     kLastEntry = kTouch  // Must be the last entry in the list
   };
 
-  WebPointerProperties()
-      : id(0),
+  WebPointerProperties(int id_param)

[sadrul, 2017/05/01 15:42:11]

explicit

[lanwei, 2017/05/01 23:51:21]

Done.

+      : id(id_param),
         force(std::numeric_limits<float>::quiet_NaN()),
         tilt_x(0),
         tilt_y(0),
@@ -58,8 +58,10 @@ class WebPointerProperties {
         movement_x(0),
         movement_y(0) {}
 
-  WebPointerProperties(Button button_param, PointerType pointer_type_param)
-      : id(0),
+  WebPointerProperties(int id_param,
+                       Button button_param,
+                       PointerType pointer_type_param)
+      : id(id_param),
         force(std::numeric_limits<float>::quiet_NaN()),
         tilt_x(0),
         tilt_y(0),