Implemented custom support for scrollLeft/scrollTop in Element

Source/bindings/dart/custom/DartElementCustom.cpp

Index: Source/bindings/dart/custom/DartElementCustom.cpp
diff --git a/Source/bindings/dart/custom/DartElementCustom.cpp b/Source/bindings/dart/custom/DartElementCustom.cpp
index bcb76c3cbb799a8618403f04b4cf9d4954ddadf9..8bd6865ae9aa3a26975460074af4e485a90c2089 100644
--- a/Source/bindings/dart/custom/DartElementCustom.cpp
+++ b/Source/bindings/dart/custom/DartElementCustom.cpp
@@ -33,6 +33,7 @@
 #include "DartElement.h"
 #include "DartHTMLElement.h"
 #include "DartSVGElement.h"
+#include "RuntimeEnabledFeatures.h"
 #include "bindings/dart/DartDOMWrapper.h"
 
 namespace WebCore {
@@ -51,35 +52,46 @@ Dart_Handle DartElement::createWrapper(DartDOMData* domData, Element* element)
 
 namespace DartElementInternal {
 
-void scrollLeftGetter(Dart_NativeArguments args)
+
+void scrollLeftSetter(Dart_NativeArguments args)
 {
+    Dart_Handle exception = 0;
     {
-        Element* receiver = DartDOMWrapper::receiver< Element >(args);
+        Element* receiver = DartDOMWrapper::receiver<Element>(args);
 
-        DartUtilities::setDartIntegerReturnValue(args, receiver->scrollLeft());
+        // FIXME: The IDL now specifies an option to pass in a dictionary
+        // instead of just an integer.
+        int scrollLeft = DartUtilities::dartToInt(args, 1, exception);
+        if (exception)
+            goto fail;
+
+        receiver->setScrollLeft(scrollLeft);
         return;
     }
+
+fail:
+    Dart_ThrowException(exception);
+    ASSERT_NOT_REACHED();
 }
 
-void scrollTopGetter(Dart_NativeArguments args)
+void scrollTopSetter(Dart_NativeArguments args)
 {
+    Dart_Handle exception = 0;
     {
-        Element* receiver = DartDOMWrapper::receiver< Element >(args);
+        Element* receiver = DartDOMWrapper::receiver<Element>(args);
 
-        DartUtilities::setDartIntegerReturnValue(args, receiver->scrollTop());
+        // FIXME: The IDL now specifies an option to pass in a dictionary
+        // instead of just an integer.
+        int scrollTop = DartUtilities::dartToInt(args, 1, exception);
+        if (exception)
+            goto fail;
+
+        receiver->setScrollTop(scrollTop);
         return;
     }
-}
 
-void scrollLeftSetter(Dart_NativeArguments args)
-{
-    // FIXMEDART: implement
-    ASSERT_NOT_REACHED();
-}
-
-void scrollTopSetter(Dart_NativeArguments args)
-{
-    // FIXMEDART: implement
+fail:
+    Dart_ThrowException(exception);
     ASSERT_NOT_REACHED();
 }