Introduce chrome.shell.createWindow stub API for app_shell

apps/shell/renderer/shell_custom_bindings.cc

+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "apps/shell/renderer/shell_custom_bindings.h"
+
+#include "content/public/renderer/render_thread.h"
+#include "content/public/renderer/render_view.h"
+#include "content/public/renderer/v8_value_converter.h"
+#include "extensions/common/extension_messages.h"
+#include "extensions/renderer/script_context.h"
+#include "extensions/renderer/script_context_set.h"
+#include "third_party/WebKit/public/web/WebFrame.h"
+#include "third_party/WebKit/public/web/WebView.h"
+#include "v8/include/v8.h"
+
+namespace apps {
+
+ShellCustomBindings::ShellCustomBindings(extensions::ScriptContext* context)
+    : extensions::ObjectBackedNativeHandler(context) {
+  RouteFunction(
+      "GetView",
+      base::Bind(&ShellCustomBindings::GetView, base::Unretained(this)));
+}
+
+void ShellCustomBindings::GetView(
+    const v8::FunctionCallbackInfo<v8::Value>& args) {
+  if (args.Length() != 1 || !args[0]->IsInt32())
+    return;
+
+  int view_id = args[0]->Int32Value();
+  if (view_id == MSG_ROUTING_NONE)
+    return;
+
+  content::RenderView* view = content::RenderView::FromRoutingID(view_id);
+  if (!view)
+    return;
+
+  // Set the opener so we have a security origin set up before returning the DOM
+  // reference.
+  content::RenderView* render_view = context()->GetRenderView();
+  if (!render_view)
+    return;
+  blink::WebFrame* opener = render_view->GetWebView()->mainFrame();
+  blink::WebFrame* frame = view->GetWebView()->mainFrame();
+  frame->setOpener(opener);
+
+  // Resume resource requests.
+  content::RenderThread::Get()->Send(
+      new ExtensionHostMsg_ResumeRequests(view->GetRoutingID()));
+
+  // Return the script context.
+  v8::Local<v8::Value> window = frame->mainWorldScriptContext()->Global();
+  args.GetReturnValue().Set(window);
+}
+
+}  // namespace apps