Use Point<num> in dart:html for strong mode

tools/dom/templates/html/impl/impl_Touch.darttemplate

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 part of $LIBRARYNAME;
 
 @DocsEditable()
 $(ANNOTATIONS)$(NATIVESPEC)$(CLASS_MODIFIERS)class $CLASSNAME$EXTENDS$IMPLEMENTS {
 $!MEMBERS
 
@@ skipping 14 matching lines @@
   int get __screenX => _blink.BlinkTouch.instance.screenX_Getter_(this).round();
   int get __screenY => _blink.BlinkTouch.instance.screenY_Getter_(this).round();
   int get __pageX => _blink.BlinkTouch.instance.pageX_Getter_(this).round();
   int get __pageY => _blink.BlinkTouch.instance.pageY_Getter_(this).round();
   int get __radiusX => _blink.BlinkTouch.instance.radiusX_Getter_(this).round();
   int get __radiusY => _blink.BlinkTouch.instance.radiusY_Getter_(this).round();
 $endif
 
   @DomName('Touch.clientX')
   @DomName('Touch.clientY')
-  Point get client => new Point(__clientX, __clientY);
+  Point get client => new Point/*<num>*/(__clientX, __clientY);
 
   @DomName('Touch.pageX')
   @DomName('Touch.pageY')
-  Point get page => new Point(__pageX, __pageY);
+  Point get page => new Point/*<num>*/(__pageX, __pageY);
 
   @DomName('Touch.screenX')
   @DomName('Touch.screenY')
-  Point get screen => new Point(__screenX, __screenY);
+  Point get screen => new Point/*<num>*/(__screenX, __screenY);
 
   @DomName('Touch.radiusX')
   @DocsEditable()
   @SupportedBrowser(SupportedBrowser.CHROME)
   @SupportedBrowser(SupportedBrowser.SAFARI)
   @Experimental()
   int get radiusX => __radiusX;
 
   @DomName('Touch.radiusY')
   @DocsEditable()
   @SupportedBrowser(SupportedBrowser.CHROME)
   @SupportedBrowser(SupportedBrowser.SAFARI)
   @Experimental()
   int get radiusY => __radiusY;
 
 }