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

third_party/WebKit/public/BUILD.gn

 # Copyright 2014 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.
 
 import("//mojo/public/tools/bindings/mojom.gni")
 import("//third_party/WebKit/Source/config.gni")
 import("//tools/grit/grit_rule.gni")
 
 if (is_android) {
   import("//build/config/android/rules.gni")
@@ skipping 242 matching lines @@
     "platform/WebRTCCertificate.h",
     "platform/WebRTCCertificateGenerator.h",
     "platform/WebRTCConfiguration.h",
     "platform/WebRTCDTMFSenderHandler.h",
     "platform/WebRTCDTMFSenderHandlerClient.h",
     "platform/WebRTCDataChannelHandler.h",
     "platform/WebRTCDataChannelHandlerClient.h",
     "platform/WebRTCDataChannelInit.h",
     "platform/WebRTCICECandidate.h",
     "platform/WebRTCKeyParams.h",
+    "platform/WebRTCLegacyStats.h",
     "platform/WebRTCOfferOptions.h",
     "platform/WebRTCPeerConnectionHandler.h",
     "platform/WebRTCPeerConnectionHandlerClient.h",
     "platform/WebRTCSessionDescription.h",
     "platform/WebRTCSessionDescriptionRequest.h",
-    "platform/WebRTCStats.h",
     "platform/WebRTCStatsRequest.h",
     "platform/WebRTCStatsResponse.h",
     "platform/WebRTCVoidRequest.h",
     "platform/WebRect.h",
     "platform/WebReferrerPolicy.h",
     "platform/WebRenderingStats.h",
     "platform/WebScheduler.h",
     "platform/WebScreenInfo.h",
     "platform/WebScrollbar.h",
     "platform/WebScrollbarBehavior.h",
@@ skipping 456 matching lines @@
   export_define_blink = "BLINK_PLATFORM_IMPLEMENTATION=1"
   export_header_blink = "third_party/WebKit/public/platform/WebCommon.h"
 }
 
 group("generate_mojo_bindings") {
   deps = [
     ":mojo_bindings_blink__generator",
     ":offscreen_canvas_mojo_bindings_blink__generator",
   ]
 }