Remove old-style constraints from Chrome internals

content/renderer/media/rtc_media_constraints.h

-// Copyright (c) 2012 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 CONTENT_RENDERER_MEDIA_RTC_MEDIA_CONSTRAINTS_H_
-#define CONTENT_RENDERER_MEDIA_RTC_MEDIA_CONSTRAINTS_H_
-
-#include "base/compiler_specific.h"
-#include "content/common/content_export.h"
-#include "third_party/webrtc/api/mediaconstraintsinterface.h"
-
-namespace blink {
-class WebMediaConstraints;
-}
-
-namespace content {
-
-// RTCMediaConstraints acts as a glue layer between WebKits MediaConstraints and
-// libjingle webrtc::MediaConstraintsInterface.
-// Constraints are used by PeerConnection and getUserMedia API calls.
-class CONTENT_EXPORT RTCMediaConstraints
-    : public NON_EXPORTED_BASE(webrtc::MediaConstraintsInterface) {
- public:
-  RTCMediaConstraints();
-  explicit RTCMediaConstraints(
-      const blink::WebMediaConstraints& constraints);
-  ~RTCMediaConstraints() override;
-  const Constraints& GetMandatory() const override;
-  const Constraints& GetOptional() const override;
-  // Adds a mandatory constraint, optionally overriding an existing one.
-  // If the constraint is already set and |override_if_exists| is false,
-  // the function will return false, otherwise true.
-  bool AddMandatory(const std::string& key, const std::string& value,
-                    bool override_if_exists);
-  // As above, but against the optional constraints.
-  bool AddOptional(const std::string& key, const std::string& value,
-                   bool override_if_exists);
-
- protected:
-  bool AddConstraint(Constraints* constraints,
-                     const std::string& key,
-                     const std::string& value,
-                     bool override_if_exists);
-  Constraints mandatory_;
-  Constraints optional_;
-};
-
-}  // namespace content
-
-
-#endif  // CONTENT_RENDERER_MEDIA_RTC_MEDIA_CONSTRAINTS_H_