Centralize ScreenOrientationProvider logic, add platform delegates

content/public/browser/screen_orientation_provider_factory.h

+// 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.
+
+#ifndef CONTENT_PUBLIC_BROWSER_SCREEN_ORIENTATION_PROVIDER_FACTORY_H_
+#define CONTENT_PUBLIC_BROWSER_SCREEN_ORIENTATION_PROVIDER_FACTORY_H_
+
+#include "base/macros.h"
+#include "content/common/content_export.h"
+
+namespace content {
+
+class ScreenOrientationDispatcherHost;
+class ScreenOrientationProvider;
+class WebContents;
+
+// Factory which can be extended in order to provide a platform specific
+// creation of ScreenOrientationProvider.
+class CONTENT_EXPORT ScreenOrientationProviderFactory {
+ public:
+  ScreenOrientationProviderFactory() {}
+  virtual ~ScreenOrientationProviderFactory() {}
+
+  // Creates a ScreenOrientationProvider for a ScreenOrientationDispatcherHost
+  // to notify.
+  virtual ScreenOrientationProvider* Create(

[mlamouri (slow - plz ping), 2014/09/16 20:21:04]

ditto, should that be an own ptr?

+      ScreenOrientationDispatcherHost* dispatcher_host,
+      WebContents* web_contents) = 0;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(ScreenOrientationProviderFactory);
+};
+
+} // namespace content
+
+#endif // CONTENT_PUBLIC_BROWSER_SCREEN_ORIENTATION_PROVIDER_FACTORY_H_