PPAPI: implement GetSupportedPreviewSizes

ppapi/proxy/camera_capabilities_resource.cc

+// Copyright 2015 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 "base/logging.h"
+#include "ppapi/proxy/camera_capabilities_resource.h"
+
+namespace ppapi {
+namespace proxy {
+
+CameraCapabilitiesResource::CameraCapabilitiesResource(
+    PP_Instance instance,
+    const std::vector<PP_Size>& preview_sizes)
+    : Resource(OBJECT_IS_PROXY, instance),
+      num_preview_sizes_(static_cast<int32_t>(preview_sizes.size())),
+      preview_sizes_(new PP_Size[num_preview_sizes_]) {
+  std::copy(preview_sizes.begin(), preview_sizes.end(), preview_sizes_.get());
+}
+
+CameraCapabilitiesResource::~CameraCapabilitiesResource() {
+}
+
+thunk::PPB_CameraCapabilities_API*
+CameraCapabilitiesResource::AsPPB_CameraCapabilities_API() {
+  return this;
+}
+
+void CameraCapabilitiesResource::GetSupportedPreviewSizes(
+    int32_t* array_size,
+    PP_Size** preview_sizes) {
+  *array_size = num_preview_sizes_;
+  *preview_sizes = preview_sizes_.get();
+}
+
+}  // namespace proxy
+}  // namespace ppapi