ImageCapture: Implement focus mode for Android and Fake Video Capture Devices

third_party/WebKit/Source/modules/imagecapture/PhotoCapabilities.cpp

+// 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.
+
+#include "modules/imagecapture/PhotoCapabilities.h"
+
+namespace blink {
+
+// static
+PhotoCapabilities* PhotoCapabilities::create()
+{
+    return new PhotoCapabilities();
+}
+
+MediaSettingsRange* PhotoCapabilities::zoom() const { return m_zoom; }
+
+void PhotoCapabilities::setZoom(MediaSettingsRange* value) { m_zoom = value; }
+
+String PhotoCapabilities::focusMode() const
+{
+    switch (m_focusMode) {
+    case media::mojom::blink::FocusMode::UNAVAILABLE:
+        return "unavailable";
+    case media::mojom::blink::FocusMode::AUTO:
+        return "auto";
+    case media::mojom::blink::FocusMode::MANUAL:
+        return "manual";
+    default:
+        NOTREACHED();
+    }
+    return emptyString();
+}
+
+void PhotoCapabilities::setFocusMode(media::mojom::blink::FocusMode focusMode)
+{
+    m_focusMode = focusMode;
+}
+
+DEFINE_TRACE(PhotoCapabilities)
+{
+    visitor->trace(m_zoom);
+}
+
+} // namespace blink