Add deepPath

third_party/WebKit/Source/core/events/Event.idl

Index: third_party/WebKit/Source/core/events/Event.idl
diff --git a/third_party/WebKit/Source/core/events/Event.idl b/third_party/WebKit/Source/core/events/Event.idl
index 1db19f6f5c94f071ff64efa1670944e9804eb507..6dbfbaf9577ef258e180b9607224f3cf33b03898 100644
--- a/third_party/WebKit/Source/core/events/Event.idl
+++ b/third_party/WebKit/Source/core/events/Event.idl
@@ -46,10 +46,10 @@
     [RuntimeEnabled=TrustedEvents, Unforgeable] readonly attribute boolean isTrusted;
 
     // TODO(majidvp): At the moment the actual return value type can either
-    // be: 

[kochi, 2016/01/13 09:03:28]

Probably your editor trimmed the line-end whitespace automatically?

Please usually avoid mixing such automatic change in this CL,
otherwise line-by-line history (viewable via 'git blame' command)
would get confused.

[yuzuchan, 2016/01/15 04:18:31]

Done. I changed the editor settings too.
On 2016/01/13 09:03:28, kochi wrote:

+    // be:
     //  - DOMTimeStamp (i.e. long long): legacy type
-    //  - DOMHighResTimeStamp (i.e. double):  HighResEventTimeStamp REF is 
-    //    enabled 

[kochi, 2016/01/13 09:03:28]

Ditto

[yuzuchan, 2016/01/15 04:18:31]

Done.

+    //  - DOMHighResTimeStamp (i.e. double):  HighResEventTimeStamp REF is
+    //    enabled
     // Below IDL definition uses DOMHighResTimeStamp because all DOMTimeStamp
     // values can be represented in double type without any loss of precision.
     // Once the feature is enabled by default the return value type will always
@@ -64,7 +64,7 @@
     // Shadow DOM
     // https://w3c.github.io/webcomponents/spec/shadow/#extensions-to-event-interface
     [MeasureAs=EventPath, CallWith=ScriptState] readonly attribute EventTarget[] path;
-
+    [RuntimeEnabled=ShadowDOMV1, ImplementedAs=path, MeasureAs=EventDeepPath, CallWith=ScriptState] readonly attribute EventTarget[] deepPath;
     // Non-standard APIs
     const unsigned short MOUSEDOWN = 1;
     const unsigned short MOUSEUP   = 2;