Web MIDI: Add a run-time flag

content/renderer/render_thread_impl.cc

 // 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.
 
 #include "content/renderer/render_thread_impl.h"
 
 #include <algorithm>
 #include <limits>
 #include <map>
 #include <vector>
@@ skipping 717 matching lines @@
 #if defined(OS_ANDROID)
   WebRuntimeFeatures::enableWebAudio(
       command_line.HasSwitch(switches::kEnableWebAudio) &&
       media::IsMediaLibraryInitialized());
 #else
   WebRuntimeFeatures::enableWebAudio(
       !command_line.HasSwitch(switches::kDisableWebAudio) &&
       media::IsMediaLibraryInitialized());
 #endif
 
+  WebRuntimeFeatures::enableWebMIDI(
+      command_line.HasSwitch(switches::kEnableWebMIDI));
+
   WebRuntimeFeatures::enableDeviceMotion(
       command_line.HasSwitch(switches::kEnableDeviceMotion));
 
   WebRuntimeFeatures::enableDeviceOrientation(
       !command_line.HasSwitch(switches::kDisableDeviceOrientation));
 
   WebRuntimeFeatures::enableSpeechInput(
       !command_line.HasSwitch(switches::kDisableSpeechInput));
 
 #if defined(OS_ANDROID)
@@ skipping 557 matching lines @@
 
 void RenderThreadImpl::SetFlingCurveParameters(
     const std::vector<float>& new_touchpad,
     const std::vector<float>& new_touchscreen) {
   webkit_platform_support_->SetFlingCurveParameters(new_touchpad,
                                                     new_touchscreen);
 
 }
 
 }  // namespace content