Type->String helper function added to WebInputEvent.

third_party/WebKit/public/platform/WebInputEvent.h

Index: third_party/WebKit/public/platform/WebInputEvent.h
diff --git a/third_party/WebKit/public/platform/WebInputEvent.h b/third_party/WebKit/public/platform/WebInputEvent.h
index c7ccbf8fb7817a7aed86b220ef3841ddd5f655cd..b5950a36abb67aa4109e5ec0bffe2d5c3df2e7b6 100644
--- a/third_party/WebKit/public/platform/WebInputEvent.h
+++ b/third_party/WebKit/public/platform/WebInputEvent.h
@@ -259,6 +259,51 @@ public:
         return type == other.type;
     }
 
+#define CASE_TYPE(t) case WebInputEvent::t:  return #t
+    static const char* GetName(WebInputEvent::Type type)

[dtapuska, 2016/08/16 21:02:40]

Can you move this implementation into the cpp file? That way we won't get
multiple copies in the different compilation units.

[sahel, 2016/08/17 22:08:16]

Done.

+    {
+        switch (type) {
+            CASE_TYPE(Undefined);
+            CASE_TYPE(MouseDown);
+            CASE_TYPE(MouseUp);
+            CASE_TYPE(MouseMove);
+            CASE_TYPE(MouseEnter);
+            CASE_TYPE(MouseLeave);
+            CASE_TYPE(ContextMenu);
+            CASE_TYPE(MouseWheel);
+            CASE_TYPE(RawKeyDown);
+            CASE_TYPE(KeyDown);
+            CASE_TYPE(KeyUp);
+            CASE_TYPE(Char);
+            CASE_TYPE(GestureScrollBegin);
+            CASE_TYPE(GestureScrollEnd);
+            CASE_TYPE(GestureScrollUpdate);
+            CASE_TYPE(GestureFlingStart);
+            CASE_TYPE(GestureFlingCancel);
+            CASE_TYPE(GestureShowPress);
+            CASE_TYPE(GestureTap);
+            CASE_TYPE(GestureTapUnconfirmed);
+            CASE_TYPE(GestureTapDown);
+            CASE_TYPE(GestureTapCancel);
+            CASE_TYPE(GestureDoubleTap);
+            CASE_TYPE(GestureTwoFingerTap);
+            CASE_TYPE(GestureLongPress);
+            CASE_TYPE(GestureLongTap);
+            CASE_TYPE(GesturePinchBegin);
+            CASE_TYPE(GesturePinchEnd);
+            CASE_TYPE(GesturePinchUpdate);
+            CASE_TYPE(TouchStart);
+            CASE_TYPE(TouchMove);
+            CASE_TYPE(TouchEnd);
+            CASE_TYPE(TouchCancel);
+            CASE_TYPE(TouchScrollStarted);
+        default:
+            NOTREACHED();
+            return "";
+        }
+    }
+#undef CASE_TYPE
+
 protected:
     explicit WebInputEvent(unsigned sizeParam)
     {