WIP: Implement binding layer for Blink-in-JavaScript

Source/core/frame/WindowBase64.idl

Index: Source/core/frame/WindowBase64.idl
diff --git a/Source/core/frame/WindowBase64.idl b/Source/core/frame/WindowBase64.idl
index 134018ddc3e13c1cc7b5a4aa16f2c172d0b5258b..e5b80dcaf40ec6cd65b18689d7a3fe1181a4aa8c 100644
--- a/Source/core/frame/WindowBase64.idl
+++ b/Source/core/frame/WindowBase64.idl
@@ -26,9 +26,8 @@
  */
 
 [
-    ImplementedAs=DOMWindowBase64,
     NoInterfaceObject,
 ] interface WindowBase64 {
-    [RaisesException] DOMString atob(DOMString string);
-    [RaisesException] DOMString btoa(DOMString string);

[abarth-chromium, 2014/01/15 07:03:59]

You'll need to deal with exceptions too...

[haraken, 2014/01/15 07:12:36]

Good point. We need to insert v8::TryCatch and convert the exception object
thrown in Blink-in-JS's isolated world to an exception object of the outer
world.

[haraken, 2014/01/15 12:04:36]

Done. I took care of Exceptions thrown in Blink-in-JS's world. However, as
commented in V8BlinkInJavaScript.cpp, in order to implement the Exception
conversion correctly, we'll need V8 APIs that tell us Exception types. (It's
easy to implement the APIs.)

+    [BlinkInJavaScript] DOMString atob(DOMString string);
+    [BlinkInJavaScript] DOMString btoa(DOMString string);
 };