Add a stub message system to communicate with the blink WebView

This follows the model used by the Android WebView's AwRenderViewExt
class.

QtRenderViewObserverHost is attached to the WebContents and
QtRenderViewObserver is attached to the RenderView in the render
process. Both can exchange messages together and allow async commands
to be carried from WebContentsAdapter and the result sent back
through WebContentsAdapterClient.

This patch also adds a renderer subdirectory to start matching the
directory structure of Chromium.

Change-Id: I724ca2fe2a597dcd2a15e8e1a23c4eeba1190703
Reviewed-by: Pierre Rossi <pierre.rossi@gmail.com>

1 files changed, 54 insertions, 0 deletions

diff --git a/src/core/renderer/qt_render_view_observer.h b/src/core/renderer/qt_render_view_observer.h
new file mode 100644
index 000000000..8c5713c4a
--- /dev/null
+++ b/src/core/renderer/qt_render_view_observer.h
@@ -0,0 +1,54 @@
+/****************************************************************************
+**
+** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the QtWebEngine module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.  For licensing terms and
+** conditions see http://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Digia gives you certain additional
+** rights.  These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "content/public/renderer/render_view_observer.h"
+
+#include <QtGlobal>
+
+class QtRenderViewObserver : public content::RenderViewObserver {
+public:
+    QtRenderViewObserver(content::RenderView* render_view);
+
+private:
+    virtual bool OnMessageReceived(const IPC::Message& message) Q_DECL_OVERRIDE;
+
+    DISALLOW_COPY_AND_ASSIGN(QtRenderViewObserver);
+};