[DevTools] Implement screen orientation override.

Source/modules/screen_orientation/ScreenOrientationInspectorAgent.h

Index: Source/modules/screen_orientation/ScreenOrientationInspectorAgent.h
diff --git a/Source/modules/screen_orientation/ScreenOrientationInspectorAgent.h b/Source/modules/screen_orientation/ScreenOrientationInspectorAgent.h
new file mode 100644
index 0000000000000000000000000000000000000000..1f35c2ab1653aa39a0cb4fcf9657888150ebdba1
--- /dev/null
+++ b/Source/modules/screen_orientation/ScreenOrientationInspectorAgent.h
@@ -0,0 +1,42 @@
+// 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 ScreenOrientationInspectorAgent_h
+#define ScreenOrientationInspectorAgent_h
+
+#include "core/InspectorFrontend.h"
+#include "core/inspector/InspectorBaseAgent.h"
+#include "modules/ModulesExport.h"
+#include "wtf/text/WTFString.h"
+
+namespace blink {
+
+class ScreenOrientationController;
+
+typedef String ErrorString;
+
+class MODULES_EXPORT ScreenOrientationInspectorAgent final : public InspectorBaseAgent<ScreenOrientationInspectorAgent, InspectorFrontend::ScreenOrientation>, public InspectorBackendDispatcher::ScreenOrientationCommandHandler {
+    WTF_MAKE_NONCOPYABLE(ScreenOrientationInspectorAgent);
+public:
+    static PassOwnPtrWillBeRawPtr<ScreenOrientationInspectorAgent> create(LocalFrame&);
+
+    virtual ~ScreenOrientationInspectorAgent();
+
+    // Protocol methods.
+    virtual void setScreenOrientationOverride(ErrorString*, int, const String&) override;
+    virtual void clearScreenOrientationOverride(ErrorString*) override;
+
+    // InspectorBaseAgent overrides.
+    void disable(ErrorString*) override;
+    void restore() override;
+
+private:
+    explicit ScreenOrientationInspectorAgent(LocalFrame&);
+    LocalFrame& m_frame;
+};
+
+} // namespace blink
+
+
+#endif // !defined(ScreenOrientationInspectorAgent_h)