Added Dartium changes onto 45.0.2454.104

Source/bindings/core/v8/custom/V8InjectedScriptManager.cpp

Index: Source/bindings/core/v8/custom/V8InjectedScriptManager.cpp
diff --git a/Source/bindings/core/v8/custom/V8InjectedScriptManager.cpp b/Source/bindings/core/v8/custom/V8InjectedScriptManager.cpp
index 62eb9617eb42a65560c8cb1c59fdf374b6ecc670..32cd50b5fdb35a9413d65352e5f5d4c7f4e9c15c 100644
--- a/Source/bindings/core/v8/custom/V8InjectedScriptManager.cpp
+++ b/Source/bindings/core/v8/custom/V8InjectedScriptManager.cpp
@@ -58,6 +58,13 @@ ScriptValue InjectedScriptManager::createInjectedScript(const String& scriptSour
     if (scriptHostWrapper.IsEmpty())
         return ScriptValue();
 
+    // Store the inspectedScriptState on the scriptHostWrapper if it is
+    // different from the ScriptState associated with the context.
+    // This is needed to support Dart as Dart does not create a separate V8
+    // context for every Dart library.
+    if (inspectedScriptState != ScriptState::from(inspectedScriptState->context()))
+        V8HiddenValue::setHiddenValue(isolate, scriptHostWrapper, V8HiddenValue::scriptState(isolate), v8::External::New(isolate, inspectedScriptState));
+
     injectedScriptNative->setOnInjectedScriptHost(scriptHostWrapper);
 
     // Inject javascript into the context. The compiled script is supposed to evaluate into