Adding fromPoint to DOMPoint and DOMPointReadOnly interfaces following spec.

third_party/WebKit/Source/core/dom/DOMPointReadOnly.h

Index: third_party/WebKit/Source/core/dom/DOMPointReadOnly.h
diff --git a/third_party/WebKit/Source/core/dom/DOMPointReadOnly.h b/third_party/WebKit/Source/core/dom/DOMPointReadOnly.h
index 0c2f98a23c44a5607b1e9c6722b6dc9ec42111ca..c5a4e546f208a540fcbb2a2c6c85587ee75f0d69 100644
--- a/third_party/WebKit/Source/core/dom/DOMPointReadOnly.h
+++ b/third_party/WebKit/Source/core/dom/DOMPointReadOnly.h
@@ -11,12 +11,15 @@
 
 namespace blink {
 
+class DOMPointInit;
+
 class CORE_EXPORT DOMPointReadOnly : public GarbageCollected<DOMPointReadOnly>,
                                      public ScriptWrappable {
   DEFINE_WRAPPERTYPEINFO();
 
  public:
   static DOMPointReadOnly* create(double x, double y, double z, double w);
+  static DOMPointReadOnly* fromPoint(DOMPointInit&);

[zino, 2016/12/19 18:02:31]

nit: const DOMPointInit?

[Byoungkwon Ko, 2016/12/19 18:59:42]

Done.

 
   double x() const { return m_x; }
   double y() const { return m_y; }