PPAPI: implement GetSupportedPreviewSizes

ppapi/thunk/ppb_image_capture_api.h

+// Copyright 2014 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_IMAGE_CAPTURE_API_H_
+#define PPAPI_THUNK_PPB_IMAGE_CAPTURE_API_H_
+
+#include <string>
+
+#include "ppapi/c/private/ppb_image_capture_private.h"
+
+namespace ppapi {
+
+class TrackedCallback;
+
+namespace thunk {
+
+class PPB_ImageCapture_API {
+ public:
+  virtual ~PPB_ImageCapture_API() {}
+  virtual int32_t Open(PP_Var camera_source_id,
+                       scoped_refptr<TrackedCallback> callback) = 0;
+  virtual void Close() = 0;
+  virtual int32_t SetConfig(PP_Resource config,
+                            scoped_refptr<TrackedCallback> callback) = 0;
+  virtual int32_t GetConfig(PP_Resource* config,
+                            scoped_refptr<TrackedCallback> callback) = 0;
+  virtual int32_t GetCameraCapabilities(
+      PP_Resource* capabilities,
+      scoped_refptr<TrackedCallback> callback) = 0;
+  virtual int32_t CaptureStillImage(
+      PPB_ImageCapture_Private_ShutterCallback shutter_callback,
+      PPB_ImageCapture_Private_PreviewCallback preview_callback,
+      PPB_ImageCapture_Private_JpegCallback jpeg_callback,
+      int64_t* sequence_id) = 0;

[dmichael (off chromium), 2015/02/03 19:33:17]

Hmm, it's tempting to say you should land the CL deleting stuff from the API
before landing this, so you don't have to have all this boilerplate that's going
to disappear. WDYT?

[Justin Chuang, 2015/02/04 17:44:24]

Sure, I'm okay in either way. I can commit the other CL (deleting stuff) and
rebase this one again. 

(But changing PPB_ImageCapture to another class name need another CL *after*
this one because it is trickier.)

[wuchengli, 2015/02/05 03:32:54]

http://crrev.com/884483007 was already approved. So please merge that one first
and then rebase this one.

+};
+
+}  // namespace thunk
+}  // namespace ppapi
+
+#endif  // PPAPI_THUNK_PPB_IMAGE_CAPTURE_API_H_