bindings: Moves toV8 and v8SetReturnValue out to ToV8.h and V8Binding.h.

Source/bindings/core/v8/custom/V8WindowCustom.cpp

Index: Source/bindings/core/v8/custom/V8WindowCustom.cpp
diff --git a/Source/bindings/core/v8/custom/V8WindowCustom.cpp b/Source/bindings/core/v8/custom/V8WindowCustom.cpp
index 56d59f21441962ef56cf435de9ae52eeba5558fc..83a91efb6ce3d4033035bd2add6a7dcee31927b4 100644
--- a/Source/bindings/core/v8/custom/V8WindowCustom.cpp
+++ b/Source/bindings/core/v8/custom/V8WindowCustom.cpp
@@ -345,25 +345,4 @@ bool V8Window::indexedSecurityCheckCustom(v8::Local<v8::Object> host, uint32_t i
     return securityCheck(host);
 }
 
-v8::Handle<v8::Value> toV8(DOMWindow* window, v8::Handle<v8::Object> creationContext, v8::Isolate* isolate)
-{
-    // Notice that we explicitly ignore creationContext because the LocalDOMWindow is its own creationContext.
-
-    if (!window)
-        return v8::Null(isolate);
-    // Initializes environment of a frame, and return the global object
-    // of the frame.
-    Frame * frame = window->frame();
-    if (!frame)
-        return v8Undefined();
-
-    v8::Local<v8::Context> context = toV8Context(frame, DOMWrapperWorld::current(isolate));
-    if (context.IsEmpty())
-        return v8Undefined();
-
-    v8::Local<v8::Object> global = context->Global();
-    ASSERT(!global.IsEmpty());
-    return global;
-}
-
 } // namespace blink