DO NOT MERGE - libstagefright: check requested memory size before allocation for SoftMPEG4Encoder and SoftVPXEncoder. am: 50270d98e2 am: 1856f1fe34 am: 2c59cc083d  -s ours am: c653d2f19e
am: 62646f8c4b

* commit '62646f8c4bbadf72320ceb0e363f010fbd7d2e6e':
  DO NOT MERGE - libstagefright: check requested memory size before allocation for SoftMPEG4Encoder and SoftVPXEncoder.