libstagefright: Use LOG_BASIC when use chromium http stack

When using chromium http stack, the LogLevel is LOG_ALL, and
in chromium_net, LOG_ALL will HexEncode all received data. thus
playing a 10Mbps 1080P video stream  will generate 20Mbps Hex Buffer
for event logging. This is a heavy operation for logging.

Change-Id: I28e8173e1aa806dd23014378d530d30187360060
Author: Xuefeng Deng <xuefeng.deng@intel.com>
Singed-off-by: Shuo Gao <shuo.gao@intel.com>
Signed-off-by: Bruce Beare <bruce.j.beare@intel.com>
Signed-off-by: Jack Ren <jack.ren@intel.com>
Author-tracking-BZ: 35737