Adding WebVR interface to Blink

Source/modules/vr/HMDVRDevice.h

Index: Source/modules/vr/HMDVRDevice.h
diff --git a/Source/modules/vr/HMDVRDevice.h b/Source/modules/vr/HMDVRDevice.h
new file mode 100644
index 0000000000000000000000000000000000000000..19c85f73f8dc28e01a491e5311147b2c2f187f98
--- /dev/null
+++ b/Source/modules/vr/HMDVRDevice.h
@@ -0,0 +1,59 @@
+// Copyright 2014 The Chromium Authors. All rights reserved.

[sof, 2015/02/24 12:35:29]

nit: s/2014/2015/g

+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef HMDVRDevice_h
+#define HMDVRDevice_h
+
+#include "core/dom/DOMPoint.h"
+#include "core/dom/DOMRect.h"
+#include "modules/vr/VRDevice.h"
+#include "platform/heap/Handle.h"
+#include "public/platform/WebVR.h"
+#include "wtf/RefCounted.h"

[sof, 2015/02/24 12:35:28]

not needed (here and elsewhere in this directory, i think.)

( Only wtf/ include needed here is wtf/Forward.h )

+#include "wtf/text/WTFString.h"
+
+namespace blink {
+
+class VRPoint3D;
+class VRFieldOfView;
+class VRRect;
+
+class HMDVRDevice final : public VRDevice {
+    DEFINE_WRAPPERTYPEINFO();
+public:
+    enum VREye {
+        VREyeLeft,
+        VREyeRight,
+        VREyeNone,
+    };
+
+    HMDVRDevice(VRHardwareUnit*);

[sof, 2015/02/24 12:35:29]

this is an 'explicit' conversion, right?

+
+    typedef Vector<double> DoubleVector;
+
+    virtual void updateFromWebVRDevice(const WebVRDevice&) override;
+
+    DOMPoint* getEyeTranslation(const String& whichEye);

[sof, 2015/02/24 12:35:28]

nit/suggestion: the use of 'whichEye' in these decls can perhaps be removed
without losing too much?

Also, Blink prefers not to prefix getters with "get" (i'd characterize these as
parameterized getters in terms of what they do) -- eyeTranslation() ?

+    VRFieldOfView* getCurrentEyeFieldOfView(const String& whichEye);
+    VRFieldOfView* getRecommendedEyeFieldOfView(const String& whichEye);
+    VRFieldOfView* getMaximumEyeFieldOfView(const String& whichEye);
+    DOMRect* getRecommendedEyeRenderRect(const String& whichEye);
+    void setFieldOfView(VRFieldOfView* leftFov = 0, VRFieldOfView* rightFov = 0);
+
+    virtual void trace(Visitor*) override;
+
+private:
+    static VREye StringToVREye(const String& whichEye);
+
+    Member<VRFieldOfView> m_recommendedFOVLeft;
+    Member<VRFieldOfView> m_recommendedFOVRight;
+    Member<VRFieldOfView> m_maximumFOVLeft;
+    Member<VRFieldOfView> m_maximumFOVRight;
+    Member<DOMPoint> m_eyeTranslationLeft;
+    Member<DOMPoint> m_eyeTranslationRight;
+};
+
+} // namespace blink
+
+#endif // HMDVRDevice_h