Improve Dart Debugger performance and robustness by creating Dart wrappers using the standard SetNa…

Source/bindings/v8/custom/V8InjectedScriptHostCustom.cpp

Index: Source/bindings/v8/custom/V8InjectedScriptHostCustom.cpp
diff --git a/Source/bindings/v8/custom/V8InjectedScriptHostCustom.cpp b/Source/bindings/v8/custom/V8InjectedScriptHostCustom.cpp
index b044dbe8b2bc698bb36ffc0338113d4df8983926..4d21bac180129f91b9f9ffd34785968e70113a7a 100644
--- a/Source/bindings/v8/custom/V8InjectedScriptHostCustom.cpp
+++ b/Source/bindings/v8/custom/V8InjectedScriptHostCustom.cpp
@@ -46,6 +46,7 @@
 #include "V8Uint8Array.h"
 #include "V8Uint8ClampedArray.h"
 #include "bindings/tests/results/V8Float64Array.h"
+#include "bindings/dart/DartHandleProxy.h"
 #include "bindings/v8/BindingSecurity.h"
 #include "bindings/v8/ScriptDebugServer.h"
 #include "bindings/v8/ScriptValue.h"
@@ -63,9 +64,15 @@ namespace WebCore {
 
 Node* InjectedScriptHost::scriptValueAsNode(ScriptValue value)
 {
+    v8::HandleScope scope;
     if (!value.isObject() || value.isNull())
         return 0;
-    return V8Node::toNative(v8::Handle<v8::Object>::Cast(value.v8ValueRaw()));
+
+    v8::Handle<v8::Object> handle = v8::Handle<v8::Object>::Cast(value.v8ValueRaw());
+    if (DartHandleProxy::isDartProxy(handle))
+        return DartHandleProxy::toNativeNode(handle);
+
+    return V8Node::toNative(handle);
 }
 
 ScriptValue InjectedScriptHost::nodeAsScriptValue(ScriptState* state, Node* node)
@@ -177,6 +184,12 @@ void V8InjectedScriptHost::typeMethodCustom(const v8::FunctionCallbackInfo<v8::V
         v8SetReturnValue(args, v8::String::NewSymbol("array"));
         return;
     }
+    if (DartHandleProxy::isDartProxy(value)) {
+        const char* type = DartHandleProxy::getType(value);
+        if (type != 0)
+            v8SetReturnValue(args, v8::String::NewSymbol(type));
+        return;
+    }
 }
 
 void V8InjectedScriptHost::functionDetailsMethodCustom(const v8::FunctionCallbackInfo<v8::Value>& args)