libvpx: Pull from upstream

source/libvpx/test/i420_video_source.h

 /*
  *  Copyright (c) 2012 The WebM project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 #ifndef TEST_I420_VIDEO_SOURCE_H_
@@ skipping 34 matching lines @@
       fclose(input_file_);
   }
 
   virtual void Begin() {
     if (input_file_)
       fclose(input_file_);
     input_file_ = OpenTestDataFile(file_name_);
     ASSERT_TRUE(input_file_ != NULL) << "Input file open failed. Filename: "
         << file_name_;
     if (start_) {
-      fseek(input_file_, raw_sz_ * start_, SEEK_SET);
+      fseek(input_file_, static_cast<unsigned>(raw_sz_) * start_, SEEK_SET);
     }
 
     frame_ = start_;
     FillFrame();
   }
 
   virtual void Next() {
     ++frame_;
     FillFrame();
   }
@@ skipping 43 matching lines @@
   unsigned int frame_;
   unsigned int width_;
   unsigned int height_;
   int framerate_numerator_;
   int framerate_denominator_;
 };
 
 }  // namespace libvpx_test
 
 #endif  // TEST_I420_VIDEO_SOURCE_H_