Renamed WebRTCStats.h to WebRTCLegacyStats.h and cleaned it up

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