Added a chrome flag to enable Delay Agnostic AEC in WebRTC

content/browser/renderer_host/render_process_host_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.
 
 // Represents the browser side of the browser <--> renderer communication
 // channel. There will be one RenderProcessHost per renderer process.
 
 #include "content/browser/renderer_host/render_process_host_impl.h"
 
 #include <algorithm>
@@ skipping 1198 matching lines @@
     switches::kDisableTouchDragDrop,
     switches::kDisableTouchEditing,
     switches::kDisableV8IdleNotificationAfterCommit,
     switches::kDomAutomationController,
     switches::kEnableBeginFrameScheduling,
     switches::kEnableBleedingEdgeRenderingFastPaths,
     switches::kEnableBrowserSideNavigation,
     switches::kEnablePreferCompositingToLCDText,
     switches::kEnableCredentialManagerAPI,
     switches::kEnableDeferredImageDecoding,
+    switches::kEnableDelayAgnosticAec,
     switches::kEnableDisplayList2dCanvas,
     switches::kEnableDistanceFieldText,
     switches::kEnableEncryptedMedia,
     switches::kEnableExperimentalCanvasFeatures,
     switches::kEnableExperimentalWebPlatformFeatures,
     switches::kEnableGPUClientLogging,
     switches::kEnableGpuClientTracing,
     switches::kEnableGPUServiceLogging,
     switches::kEnableLinkDisambiguationPopup,
     switches::kEnableLowResTiling,
@@ skipping 1130 matching lines @@
 
 void RenderProcessHostImpl::DecrementWorkerRefCount() {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   DCHECK_GT(worker_ref_count_, 0);
   --worker_ref_count_;
   if (worker_ref_count_ == 0)
     Cleanup();
 }
 
 }  // namespace content