Convert RuntimeEnabledFeatures.in config file to JSON format.

components/test_runner/test_interfaces.cc

 // 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.
 
 #include "components/test_runner/test_interfaces.h"
 
 #include <stddef.h>
 
 #include <string>
 
@@ skipping 13 matching lines @@
 #include "third_party/WebKit/public/web/WebView.h"
 
 namespace test_runner {
 
 TestInterfaces::TestInterfaces()
     : test_runner_(new TestRunner(this)),
       delegate_(nullptr),
       main_view_(nullptr) {
   blink::setLayoutTestMode(true);
   // NOTE: please don't put feature specific enable flags here,
-  // instead add them to RuntimeEnabledFeatures.in
+  // instead add them to RuntimeEnabledFeatures.json5
 
   ResetAll();
 }
 
 TestInterfaces::~TestInterfaces() {
   // gamepad_controller_ doesn't depend on WebView.
   test_runner_->SetMainView(nullptr);
 
   // gamepad_controller_ ignores SetDelegate(nullptr)
   test_runner_->SetDelegate(nullptr);
@@ skipping 107 matching lines @@
 
 blink::WebThemeEngine* TestInterfaces::GetThemeEngine() {
   if (!test_runner_->UseMockTheme())
     return 0;
   if (!theme_engine_.get())
     theme_engine_.reset(new MockWebThemeEngine());
   return theme_engine_.get();
 }
 
 }  // namespace test_runner