Refactor dart:_blink into classes to improve startup time

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

Index: tools/dom/templates/html/impl/impl_Element.darttemplate
diff --git a/tools/dom/templates/html/impl/impl_Element.darttemplate b/tools/dom/templates/html/impl/impl_Element.darttemplate
index 3266c6cb4774b12c5aff38563c7c2e32219d0315..a676fa0e02e3a1913b70aa1c42fb602287885d23 100644
--- a/tools/dom/templates/html/impl/impl_Element.darttemplate
+++ b/tools/dom/templates/html/impl/impl_Element.darttemplate
@@ -1385,59 +1385,59 @@ $if DART2JS
 $else
   @DomName('Element.offsetHeight')
   @DocsEditable()
-  int get offsetHeight => _blink.Native_Element_offsetHeight_Getter(this).round();
+  int get offsetHeight => _blink.BlinkElement.$offsetHeight_Getter(this).round();
 
   @DomName('Element.offsetLeft')
   @DocsEditable()
-  int get offsetLeft => _blink.Native_Element_offsetLeft_Getter(this).round();
+  int get offsetLeft => _blink.BlinkElement.$offsetLeft_Getter(this).round();
 
   @DomName('Element.offsetTop')
   @DocsEditable()
-  int get offsetTop => _blink.Native_Element_offsetTop_Getter(this).round();
+  int get offsetTop => _blink.BlinkElement.$offsetTop_Getter(this).round();
 
   @DomName('Element.offsetWidth')
   @DocsEditable()
-  int get offsetWidth => _blink.Native_Element_offsetWidth_Getter(this).round();
+  int get offsetWidth => _blink.BlinkElement.$offsetWidth_Getter(this).round();
 
   @DomName('Element.clientHeight')
   @DocsEditable()
-  int get clientHeight => _blink.Native_Element_clientHeight_Getter(this).round();
+  int get clientHeight => _blink.BlinkElement.$clientHeight_Getter(this).round();
 
   @DomName('Element.clientLeft')
   @DocsEditable()
-  int get clientLeft => _blink.Native_Element_clientLeft_Getter(this).round();
+  int get clientLeft => _blink.BlinkElement.$clientLeft_Getter(this).round();
 
   @DomName('Element.clientTop')
   @DocsEditable()
-  int get clientTop => _blink.Native_Element_clientTop_Getter(this).round();
+  int get clientTop => _blink.BlinkElement.$clientTop_Getter(this).round();
 
   @DomName('Element.clientWidth')
   @DocsEditable()
-  int get clientWidth => _blink.Native_Element_clientWidth_Getter(this).round();
+  int get clientWidth => _blink.BlinkElement.$clientWidth_Getter(this).round();
 
   @DomName('Element.scrollHeight')
   @DocsEditable()
-  int get scrollHeight => _blink.Native_Element_scrollHeight_Getter(this).round();
+  int get scrollHeight => _blink.BlinkElement.$scrollHeight_Getter(this).round();
 
   @DomName('Element.scrollLeft')
   @DocsEditable()
-  int get scrollLeft => _blink.Native_Element_scrollLeft_Getter(this).round();
+  int get scrollLeft => _blink.BlinkElement.$scrollLeft_Getter(this).round();
 
   @DomName('Element.scrollLeft')
   @DocsEditable()
-  void set scrollLeft(int value) => _blink.Native_Element_scrollLeft_Setter(this, value.round());
+  void set scrollLeft(int value) => _blink.BlinkElement.$scrollLeft_Setter(this, value.round());
 
   @DomName('Element.scrollTop')
   @DocsEditable()
-  int get scrollTop => _blink.Native_Element_scrollTop_Getter(this).round();
+  int get scrollTop => _blink.BlinkElement.$scrollTop_Getter(this).round();
 
   @DomName('Element.scrollTop')
   @DocsEditable()
-  void set scrollTop(int value) => _blink.Native_Element_scrollTop_Setter(this, value.round());
+  void set scrollTop(int value) => _blink.BlinkElement.$scrollTop_Setter(this, value.round());
 
   @DomName('Element.scrollWidth')
   @DocsEditable()
-  int get scrollWidth => _blink.Native_Element_scrollWidth_Getter(this).round();
+  int get scrollWidth => _blink.BlinkElement.$scrollWidth_Getter(this).round();
 $endif
 
 $!MEMBERS