Migrate WTF::Deque::append() to ::push_back()

third_party/WebKit/Source/modules/vr/VRDisplay.cpp

 // Copyright 2016 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/vr/VRDisplay.h"
 
 #include "core/css/StylePropertySet.h"
 #include "core/dom/DOMException.h"
 #include "core/dom/DocumentUserGestureToken.h"
 #include "core/dom/FrameRequestCallback.h"
@@ skipping 280 matching lines @@
         "Layer bounds must either be an empty array or have 4 values");
     resolver->reject(exception);
     ReportPresentationResult(PresentationResult::InvalidLayerBounds);
     return promise;
   }
 
   if (!m_pendingPresentResolvers.isEmpty()) {
     // If we are waiting on the results of a previous requestPresent call don't
     // fire a new request, just cache the resolver and resolve it when the
     // original request returns.
-    m_pendingPresentResolvers.append(resolver);
+    m_pendingPresentResolvers.push_back(resolver);
   } else if (firstPresent) {
     bool secureContext = scriptState->getExecutionContext()->isSecureContext();
     if (!m_display) {
       forceExitPresent();
       DOMException* exception = DOMException::create(
           InvalidStateError, "The service is no longer active.");
       resolver->reject(exception);
       return promise;
     }
 
-    m_pendingPresentResolvers.append(resolver);
+    m_pendingPresentResolvers.push_back(resolver);
     m_submit_frame_client_binding.Close();
     m_display->RequestPresent(
         secureContext,
         m_submit_frame_client_binding.CreateInterfacePtrAndBind(),
         convertToBaseCallback(
             WTF::bind(&VRDisplay::onPresentComplete, wrapPersistent(this))));
   } else {
     updateLayerBounds();
     resolver->resolve();
     ReportPresentationResult(PresentationResult::SuccessAlreadyPresenting);
@@ skipping 455 matching lines @@
   visitor->trace(m_stageParameters);
   visitor->trace(m_eyeParametersLeft);
   visitor->trace(m_eyeParametersRight);
   visitor->trace(m_layer);
   visitor->trace(m_renderingContext);
   visitor->trace(m_scriptedAnimationController);
   visitor->trace(m_pendingPresentResolvers);
 }
 
 }  // namespace blink