Media Capabilities: rename mediacapabilities module to media_capabilities.

third_party/WebKit/Source/modules/mediacapabilities/NavigatorMediaCapabilities.cpp

-// Copyright 2017 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/mediacapabilities/NavigatorMediaCapabilities.h"
-
-#include "modules/mediacapabilities/MediaCapabilities.h"
-#include "platform/Supplementable.h"
-
-namespace blink {
-
-MediaCapabilities* NavigatorMediaCapabilities::mediaCapabilities(
-    Navigator& navigator) {
-  NavigatorMediaCapabilities& self =
-      NavigatorMediaCapabilities::from(navigator);
-  if (!self.m_capabilities)
-    self.m_capabilities = new MediaCapabilities();
-  return self.m_capabilities.get();
-}
-
-DEFINE_TRACE(NavigatorMediaCapabilities) {
-  visitor->trace(m_capabilities);
-  Supplement<Navigator>::trace(visitor);
-}
-
-NavigatorMediaCapabilities::NavigatorMediaCapabilities(Navigator& navigator)
-    : Supplement<Navigator>(navigator) {}
-
-NavigatorMediaCapabilities& NavigatorMediaCapabilities::from(
-    Navigator& navigator) {
-  NavigatorMediaCapabilities* supplement =
-      static_cast<NavigatorMediaCapabilities*>(
-          Supplement<Navigator>::from(navigator, supplementName()));
-  if (!supplement) {
-    supplement = new NavigatorMediaCapabilities(navigator);
-    provideTo(navigator, supplementName(), supplement);
-  }
-  return *supplement;
-}
-
-const char* NavigatorMediaCapabilities::supplementName() {
-  return "NavigatorMediaCapabilities";
-}
-
-}  // namespace blink