Fix size calcuation in video_decoder_resource.cc

ppapi/proxy/video_decoder_resource.cc

 // Copyright (c) 2012 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 "ppapi/proxy/video_decoder_resource.h"
 
 #include "base/bind.h"
 #include "gpu/command_buffer/client/gles2_cmd_helper.h"
 #include "gpu/command_buffer/client/gles2_implementation.h"
 #include "gpu/command_buffer/common/mailbox.h"
@@ skipping 55 matching lines @@
       get_picture_0_1_(NULL),
       gles2_impl_(NULL),
       initialized_(false),
       testing_(false),
       // Set |decoder_last_error_| to PP_OK after successful initialization.
       // This makes error checking a little more concise, since we can check
       // that the decoder has been initialized and hasn't returned an error by
       // just testing |decoder_last_error_|.
       decoder_last_error_(PP_ERROR_FAILED) {
   // Clear the decode_ids_ array.
-  memset(decode_ids_, 0, arraysize(decode_ids_));
+  memset(decode_ids_, 0, sizeof(decode_ids_));
   SendCreate(RENDERER, PpapiHostMsg_VideoDecoder_Create());
 }
 
 VideoDecoderResource::~VideoDecoderResource() {
   // Destroy any textures which haven't been dismissed.
   TextureMap::iterator it = textures_.begin();
   for (; it != textures_.end(); ++it)
     DeleteGLTexture(it->first);
 }
 
@@ skipping 467 matching lines @@
     get_picture_0_1_->texture_target = texture_target;
     get_picture_0_1_->texture_size = texture_size;
     get_picture_0_1_ = NULL;
   }
 
   received_pictures_.pop();
 }
 
 }  // namespace proxy
 }  // namespace ppapi