libvpx: Pull from upstream

source/libvpx/test/external_frame_buffer_test.cc

 /*
  *  Copyright (c) 2014 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.
  */
 
@@ skipping 53 matching lines @@
   // external frame buffer. Returns < 0 on an error.
   int GetFreeFrameBuffer(size_t min_size, vpx_codec_frame_buffer_t *fb) {
     EXPECT_TRUE(fb != NULL);
     const int idx = FindFreeBufferIndex();
     if (idx == num_buffers_)
       return -1;
 
     if (ext_fb_list_[idx].size < min_size) {
       delete [] ext_fb_list_[idx].data;
       ext_fb_list_[idx].data = new uint8_t[min_size];
+      memset(ext_fb_list_[idx].data, 0, min_size);
       ext_fb_list_[idx].size = min_size;
     }
 
     SetFrameBuffer(idx, fb);
     return 0;
   }
 
   // Test function that will not allocate any data for the frame buffer.
   // Returns < 0 on an error.
   int GetZeroFrameBuffer(size_t min_size, vpx_codec_frame_buffer_t *fb) {
@@ skipping 388 matching lines @@
             SetFrameBufferFunctions(
                 num_buffers, get_vp9_frame_buffer, release_vp9_frame_buffer));
 }
 #endif  // CONFIG_WEBM_IO
 
 VP9_INSTANTIATE_TEST_CASE(ExternalFrameBufferMD5Test,
                           ::testing::ValuesIn(libvpx_test::kVP9TestVectors,
                                               libvpx_test::kVP9TestVectors +
                                               libvpx_test::kNumVP9TestVectors));
 }  // namespace