Eraser tool type plumbing from ui/events to web events and PPAPI.

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

Index: third_party/WebKit/Source/core/events/PointerEventFactory.cpp
diff --git a/third_party/WebKit/Source/core/events/PointerEventFactory.cpp b/third_party/WebKit/Source/core/events/PointerEventFactory.cpp
index ef93631cd36dd7b0459ea194c434603f576bb1d1..4ca7e61e874a846d55d263cfcaad3cb2af24b636 100644
--- a/third_party/WebKit/Source/core/events/PointerEventFactory.cpp
+++ b/third_party/WebKit/Source/core/events/PointerEventFactory.cpp
@@ -21,6 +21,7 @@ const char* pointerTypeNameForWebPointPointerType(WebPointerProperties::PointerT
     case WebPointerProperties::PointerType::Touch:
         return "touch";
     case WebPointerProperties::PointerType::Pen:
+    case WebPointerProperties::PointerType::Eraser:

[bradnelson, 2016/08/30 18:19:29]

This meant to be the same for both ends?

[denniskempin, 2016/08/30 18:27:41]

This is for the web apis, which do not support eraser. They will eventually
convert the eraser into a button. mustaq@ is looking at that. 

[mustaq, 2016/08/30 19:13:51]

Yes, I will take care of Blink event handling.

In general, we should have either the modifier bit or a separate pointer_type,
and not both. From Blink side, we are fine with either solution but biasing
slightly towards a separate type to emphasize the diff in code.

Does PPAPI have any preference?

         return "pen";
     case WebPointerProperties::PointerType::Mouse:
         return "mouse";