Make <webview> use out-of-process iframe architecture.

components/guest_view/renderer/iframe_guest_view_request.h

Index: components/guest_view/renderer/iframe_guest_view_request.h
diff --git a/components/guest_view/renderer/iframe_guest_view_request.h b/components/guest_view/renderer/iframe_guest_view_request.h
new file mode 100644
index 0000000000000000000000000000000000000000..06da0d6534abe7a53a6bfc6d2da4058dc9ee4f7b
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+++ b/components/guest_view/renderer/iframe_guest_view_request.h
@@ -0,0 +1,41 @@
+// Copyright 2015 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.
+
+#ifndef COMPONENTS_GUEST_VIEW_RENDERER_IFRAME_GUEST_VIEW_REQUEST_H_
+#define COMPONENTS_GUEST_VIEW_RENDERER_IFRAME_GUEST_VIEW_REQUEST_H_
+
+#include "components/guest_view/renderer/guest_view_request.h"
+#include "ipc/ipc_message.h"
+#include "v8/include/v8.h"
+
+namespace guest_view {
+class GuestViewContainer;
+
+// This class represents an AttachGuest request in --site-per-process from
+// Javascript. It includes
+// the input parameters and the callback function.
+class GuestViewAttachIframeRequest : public guest_view::GuestViewRequest {
+ public:
+  GuestViewAttachIframeRequest(GuestViewContainer* container,
+                               int render_frame_routing_id,
+                               int guest_instance_id,
+                               scoped_ptr<base::DictionaryValue> params,
+                               v8::Local<v8::Function> callback,
+                               v8::Isolate* isolate);
+  ~GuestViewAttachIframeRequest() override;
+
+  void PerformRequest() override;
+  void HandleResponse(const IPC::Message& message) override;
+
+ private:
+  const int render_frame_routing_id_;
+  const int guest_instance_id_;
+  scoped_ptr<base::DictionaryValue> params_;
+
+  DISALLOW_COPY_AND_ASSIGN(GuestViewAttachIframeRequest);
+};
+
+}  // namespace guest_view
+
+#endif  // COMPONENTS_GUEST_VIEW_RENDERER_IFRAME_GUEST_VIEW_REQUEST_H_