VDA: Append correct number of bytes per frame for VP8

content/common/gpu/media/video_decode_accelerator_unittest.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.
 //
 // The bulk of this file is support code; sorry about that.  Here's an overview
 // to hopefully help readers of this code:
 // - RenderingHelper is charged with interacting with X11/{EGL/GLES2,GLX/GL} or
 //   Win/EGL.
 // - ClientState is an enum for the state of the decode client used by the test.
 // - ClientStateNotification is a barrier abstraction that allows the test code
@@ skipping 517 matching lines @@
 std::string GLRenderingVDAClient::GetBytesForNextFrames(
     size_t start_pos, size_t* end_pos) {
   // Helpful description: http://wiki.multimedia.cx/index.php?title=IVF
   std::string bytes;
   if (start_pos == 0)
     start_pos = 32;  // Skip IVF header.
   *end_pos = start_pos;
   for (int i = 0; i < num_fragments_per_decode_; ++i) {
     uint32 frame_size = *reinterpret_cast<uint32*>(&encoded_data_[*end_pos]);
     *end_pos += 12;  // Skip frame header.
-    bytes.append(encoded_data_.substr(*end_pos, *end_pos + frame_size));
+    bytes.append(encoded_data_.substr(*end_pos, frame_size));
     *end_pos += frame_size;
     if (*end_pos + 12 >= encoded_data_.size())
       return bytes;
   }
   return bytes;
 }
 
 void GLRenderingVDAClient::DecodeNextFragments() {
   if (decoder_deleted())
     return;
@@ skipping 342 matching lines @@
 #if defined(OS_WIN)
   DXVAVideoDecodeAccelerator::PreSandboxInitialization();
 #elif defined(OS_CHROMEOS) && defined(ARCH_CPU_ARMEL)
   OmxVideoDecodeAccelerator::PreSandboxInitialization();
 #elif defined(OS_CHROMEOS) && defined(ARCH_CPU_X86_FAMILY)
   VaapiVideoDecodeAccelerator::PreSandboxInitialization();
 #endif
 
   return RUN_ALL_TESTS();
 }