Speed-up NewDecomposer DBI stream parsing by reading entire stream to memory.
Speed-up NewDecomposer DBI stream parsing by reading entire stream to memory.

(Also, remove to log messages I left in my last CL!)

BUG=
R=sebmarchand@chromium.org

Review URL: https://codereview.appspot.com/20420044

git-svn-id: db59699583a60be9a535cd09cdc9132301867226@1875 15e8cca8-e42c-11de-a347-f34a4f72eb7d

ericmckean/syzygy,supriyantomaftuh/syzygy,ericmckean/syzygy,pombreda/syzygy,google/syzygy,supriyantomaftuh/syzygy,sebmarchand/syzygy,ericmckean/syzygy,Eloston/syzygy,wangming28/syzygy,wangming28/syzygy,sebmarchand/syzygy,ericmckean/syzygy,pombreda/syzygy,sebmarchand/syzygy,sebmarchand/syzygy,sebmarchand/syzygy,google/syzygy,ericmckean/syzygy,wangming28/syzygy,Eloston/syzygy,supriyantomaftuh/syzygy,google/syzygy,google/syzygy,pombreda/syzygy,pombreda/syzygy,wangming28/syzygy,supriyantomaftuh/syzygy,pombreda/syzygy