PPAPI: implement GetSupportedPreviewSizes

ppapi/thunk/ppb_camera_capabilities_api.h

Index: ppapi/thunk/ppb_camera_capabilities_api.h
diff --git a/ppapi/thunk/ppb_camera_capabilities_api.h b/ppapi/thunk/ppb_camera_capabilities_api.h
new file mode 100644
index 0000000000000000000000000000000000000000..31156012058a41dc54ff4e07ac6e4f45879e1a5b
--- /dev/null
+++ b/ppapi/thunk/ppb_camera_capabilities_api.h
@@ -0,0 +1,24 @@
+// 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.
+
+#ifndef PPAPI_THUNK_PPB_CAMERA_CAPABILITIES_API_H_
+#define PPAPI_THUNK_PPB_CAMERA_CAPABILITIES_API_H_
+
+#include "ppapi/c/private/ppb_camera_capabilities_private.h"
+
+namespace ppapi {
+
+namespace thunk {
+
+class PPB_CameraCapabilities_API {
+ public:
+  virtual ~PPB_CameraCapabilities_API() {}
+  virtual void GetSupportedPreviewSizes(int32_t* array_size,
+                                        PP_Size** preview_sizes) = 0;
+};
+
+}  // namespace thunk
+}  // namespace ppapi
+
+#endif  // PPAPI_THUNK_PPB_CAMERA_CAPABILITIES_API_H_