ImageCapture: don't list |torch| in Capabilities if not supported

third_party/WebKit/Source/modules/imagecapture/ImageCapture.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/imagecapture/ImageCapture.h"
 
 #include "bindings/core/v8/CallbackPromiseAdapter.h"
 #include "bindings/core/v8/ScriptPromiseResolver.h"
 #include "core/dom/DOMException.h"
 #include "core/dom/ExceptionCode.h"
@@ skipping 618 matching lines @@
     capabilities_.setSharpness(
         MediaSettingsRange::Create(*capabilities.sharpness));
     settings_.setSharpness(capabilities.sharpness->current);
   }
 
   if (capabilities.zoom->max != capabilities.zoom->min) {
     capabilities_.setZoom(MediaSettingsRange::Create(*capabilities.zoom));
     settings_.setZoom(capabilities.zoom->current);
   }
 
-  capabilities_.setTorch(capabilities.supports_torch);
+  if (capabilities.supports_torch)
+    capabilities_.setTorch(capabilities.supports_torch);
   if (capabilities.supports_torch)
     settings_.setTorch(capabilities.torch);
 }
 
 void ImageCapture::OnServiceConnectionError() {
   service_.reset();
   for (ScriptPromiseResolver* resolver : service_requests_)
     resolver->Reject(DOMException::Create(kNotFoundError, kNoServiceError));
   service_requests_.Clear();
 }
 
 DEFINE_TRACE(ImageCapture) {
   visitor->Trace(stream_track_);
   visitor->Trace(capabilities_);
   visitor->Trace(settings_);
   visitor->Trace(current_constraints_);
   visitor->Trace(service_requests_);
   EventTargetWithInlineData::Trace(visitor);
   ContextLifecycleObserver::Trace(visitor);
 }
 
 }  // namespace blink