WebRTCStats added, retaining type info when surfacing WebRTC stats into Blink

third_party/WebKit/public/platform/WebRTCStats.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 WebRTCStats_h
+#define WebRTCStats_h
+
+#include "WebCommon.h"
+#include "WebString.h"
+
+namespace blink {
+
+class WebRTCStatsMemberIterator;
+class WebRTCStatsMember;
+
+enum WebRTCStatsType {
+    WebRTCStatsTypeUnknown
+};
+
+enum WebRTCStatsMemberName {
+    WebRTCStatsMemberNameUnknown
+};
+
+enum WebRTCStatsMemberType {
+    WebRTCStatsMemberTypeInt,
+    WebRTCStatsMemberTypeInt64,
+    WebRTCStatsMemberTypeFloat,
+    WebRTCStatsMemberTypeString,
+    WebRTCStatsMemberTypeBool,
+    WebRTCStatsMemberTypeId,
+};
+
+class WebRTCStats {
+public:
+    virtual ~WebRTCStats() {}
+
+    virtual WebString id() const = 0;
+    virtual WebRTCStatsType type() const = 0;
+    virtual WebString typeToString() const = 0;
+    virtual double timestamp() const = 0;
+
+    // The caller owns the iterator. The iterator must not be used after
+    // the |WebRTCStats| that created it is destroyed.
+    virtual WebRTCStatsMemberIterator* iterator() const = 0;
+};
+
+class WebRTCStatsMemberIterator {
+public:
+    virtual ~WebRTCStatsMemberIterator() {}
+    virtual bool isEnd() const = 0;
+    virtual void next() = 0;
+
+    virtual WebRTCStatsMemberName name() const = 0;
+    virtual WebString displayName() const = 0;
+
+    virtual WebRTCStatsMemberType type() const = 0;
+    // Value getters. No conversion is performed; the function must match the
+    // member's |type|.
+    virtual int valueInt() const = 0; // WebRTCStatsMemberTypeInt
+    virtual int64_t valueInt64() const = 0; // WebRTCStatsMemberTypeInt64
+    virtual float valueFloat() const = 0; // WebRTCStatsMemberTypeFloat
+    virtual WebString valueString() const = 0; // WebRTCStatsMemberTypeString
+    virtual bool valueBool() const = 0; // WebRTCStatsMemberTypeBool
+
+    // Converts the value to string (regardless of |type|).
+    virtual WebString valueToString() const = 0;
+};
+
+} // namespace blink
+
+#endif // WebRTCStats_h