ppapi: VideoEncoder: fix reported value for GetSupportedProfiles()

ppapi/proxy/video_encoder_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/memory/shared_memory.h"
 #include "base/numerics/safe_conversions.h"
 #include "ppapi/c/pp_array_output.h"
 #include "ppapi/proxy/ppapi_messages.h"
 #include "ppapi/proxy/video_encoder_resource.h"
 #include "ppapi/proxy/video_frame_resource.h"
@@ skipping 249 matching lines @@
   if (!writer.is_valid()) {
     RunCallback(&get_supported_profiles_callback_, PP_ERROR_BADARGUMENT);
     return;
   }
 
   if (!writer.StoreVector(profiles)) {
     RunCallback(&get_supported_profiles_callback_, PP_ERROR_FAILED);
     return;
   }
 
-  RunCallback(&get_supported_profiles_callback_, PP_OK);
+  RunCallback(&get_supported_profiles_callback_,
+              base::checked_cast<int32_t>(profiles.size()));
 }
 
 void VideoEncoderResource::OnPluginMsgInitializeReply(
     const ResourceMessageReplyParams& params,
     uint32_t input_frame_count,
     const PP_Size& input_coded_size) {
   DCHECK(!initialized_);
 
   encoder_last_error_ = params.result();
   if (!encoder_last_error_)
@@ skipping 142 matching lines @@
   for (VideoFrameMap::iterator it = video_frames_.begin();
        it != video_frames_.end(); ++it) {
     it->second->Invalidate();
     it->second = nullptr;
   }
   video_frames_.clear();
 }
 
 }  // namespace proxy
 }  // namespace ppapi