Remove PlatformMouseEvent and use WebMouseEvent instead

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 86f2960081b8227573c54db16384cacb5094edbd..27e59c44268912ee535ebd983ab9dc7d7fe9c4bf 100644
--- a/third_party/WebKit/public/platform/WebPointerProperties.h
+++ b/third_party/WebKit/public/platform/WebPointerProperties.h
@@ -17,16 +17,6 @@ namespace blink {
 // WebTouchEvent and WebTouchPoint and merge this into WebPointerEvent.
 class WebPointerProperties {
  public:
-  WebPointerProperties()
-      : id(0),
-        force(std::numeric_limits<float>::quiet_NaN()),
-        tiltX(0),
-        tiltY(0),
-        tangentialPressure(0.0f),
-        twist(0),
-        button(Button::NoButton),
-        pointerType(PointerType::Unknown) {}
-
   enum class Button { NoButton = -1, Left, Middle, Right, X1, X2, Eraser };
 
   enum class Buttons : unsigned {
@@ -48,6 +38,26 @@ class WebPointerProperties {
     LastEntry = Touch  // Must be the last entry in the list
   };
 
+  WebPointerProperties()
+      : id(0),
+        force(std::numeric_limits<float>::quiet_NaN()),
+        tiltX(0),
+        tiltY(0),
+        tangentialPressure(0.0f),
+        twist(0),
+        button(Button::NoButton),
+        pointerType(PointerType::Unknown) {}
+
+  WebPointerProperties(Button buttonParam, PointerType pointerTypeParam)
+      : id(0),
+        force(std::numeric_limits<float>::quiet_NaN()),
+        tiltX(0),
+        tiltY(0),
+        tangentialPressure(0.0f),
+        twist(0),
+        button(buttonParam),
+        pointerType(pointerTypeParam) {}
+
   int id;
 
   // The valid range is [0,1], with NaN meaning pressure is not supported by