shapedetection module: Introduce basic structure for face detection

third_party/WebKit/Source/modules/shapedetection/Detector.h

+// Copyright 2016 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 THIRD_PARTY_WEBKIT_SOURCE_MODULES_SHAPEDETECTION_DETECTOR_H_
+#define THIRD_PARTY_WEBKIT_SOURCE_MODULES_SHAPEDETECTION_DETECTOR_H_

[haraken, 2016/09/27 14:46:27]

At the moment, Blink uses #define SHAPEDETECTION_DETECTOR_H_. Though it will be
updated when the coding style assimilation project is complete.

[xianglu, 2016/09/27 16:46:25]

The SHAPEDETECTION_* header guard doesn't pass the presubmit check, I will
change it in the next CL if possible.

+
+#include "bindings/core/v8/ScriptPromise.h"
+#include "bindings/core/v8/ScriptPromiseResolver.h"

[haraken, 2016/09/27 14:46:27]

Remove this.

[xianglu, 2016/09/27 16:46:25]

Done.

+#include "bindings/core/v8/ScriptWrappable.h"
+#include "modules/ModulesExport.h"
+
+namespace blink {
+
+class DetectedObject;
+class HTMLImageElement;
+
+class MODULES_EXPORT Detector
+    : public GarbageCollected<Detector>
+    , public ScriptWrappable {
+    DEFINE_WRAPPERTYPEINFO();
+
+public:
+    static Detector* create();
+    virtual ScriptPromise detect(ScriptState*, const HTMLImageElement*) = 0;
+    DEFINE_INLINE_TRACE() {};

[haraken, 2016/09/27 14:46:27]

Redundant ;

[xianglu, 2016/09/27 16:46:25]

In order to make base class GarbageCollected, we need to declare and define
"trace" here to pass the compiler.

+};
+
+} // namespace blink
+
+#endif // THIRD_PARTY_WEBKIT_SOURCE_MODULES_SHAPEDETECTION_DETECTOR_H_