ImageCapture: introduce image_capture Blob to allow move-only semantics

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 200 matching lines @@
     if (!m_serviceRequests.contains(resolver))
         return;
 
     if (result)
         resolver->resolve();
     else
         resolver->reject(DOMException::create(UnknownError, "setOptions failed"));
     m_serviceRequests.remove(resolver);
 }
 
-void ImageCapture::onTakePhoto(ScriptPromiseResolver* resolver, const String& mimeType, const Vector<uint8_t>& data)
+void ImageCapture::onTakePhoto(ScriptPromiseResolver* resolver, media::mojom::blink::BlobPtr blob)
 {
     if (!m_serviceRequests.contains(resolver))
         return;
 
-    if (data.isEmpty())
+    // TODO(mcasas): Should be using a mojo::StructTraits.
+    if (blob->data.isEmpty())
         resolver->reject(DOMException::create(UnknownError, "platform error"));
     else
-        resolver->resolve(Blob::create(data.data(), data.size(), mimeType));
+        resolver->resolve(Blob::create(blob->data.data(), blob->data.size(), blob->mime_type));
     m_serviceRequests.remove(resolver);
 }
 
 void ImageCapture::onServiceConnectionError()
 {
     m_service.reset();
     for (ScriptPromiseResolver* resolver : m_serviceRequests)
         resolver->reject(DOMException::create(NotFoundError, kNoServiceError));
     m_serviceRequests.clear();
 }
 
 DEFINE_TRACE(ImageCapture)
 {
     visitor->trace(m_streamTrack);
     visitor->trace(m_serviceRequests);
     EventTargetWithInlineData::trace(visitor);
     ContextLifecycleObserver::trace(visitor);
 }
 
 } // namespace blink