fix warning on visual C for mips cpu detect

fix warning on visual C for mips cpu detect

follow up warning fixs
cpu_id.cc(167): warning C4267: 'initializing': conversion from 'size_t' to 'int', possible loss of data
lint warning: cpu_id.cc:171:  Missing space before ( in if(  [whitespace/parens] [5]

TBR=manojkumar.bhosale@imgtec.com
BUG=libyuv:634
TEST=try bots for windows.

Committed: https://chromium.googlesource.com/libyuv/libyuv/+/34a29bf756234839c7829b0e76d6e603aaa4e5d4

[fbarchard1, 2016-09-23 00:58:45]

Description was changed from

==========
fix warning on visual C for mips cpu detect

cpu_id.cc(167): warning C4267: 'initializing': conversion from 'size_t' to
'int', possible loss of data

TBR=manojkumar.bhosale@imgtec.com
BUG=libyuv:634
TEST=try bots for windows.
==========

to

==========
fix warning on visual C for mips cpu detect

follow up warning fixs
cpu_id.cc(167): warning C4267: 'initializing': conversion from 'size_t' to
'int', possible loss of data
lint warning: cpu_id.cc:171:  Missing space before ( in if(  [whitespace/parens]
[5]

TBR=manojkumar.bhosale@imgtec.com
BUG=libyuv:634
TEST=try bots for windows.
==========

[fbarchard1, 2016-09-23 00:59:03]

fbarchard@google.com changed reviewers:
+ braveyao@chromium.org

[fbarchard1, 2016-09-23 00:59:20]

follow up fix for mips

[fbarchard1, 2016-09-23 01:25:44]

this fixes the initial build break but needs followup for the gyp and gn builds.

on arm the arm_neon variable is set by chrome's build.  but on mips it isnt set,
so I've initialized it to 0, disabling msa by default.
for BUILD.gn msa was not enabled and something should be added to enable the
code.

[fbarchard1, 2016-09-23 01:25:54]

Description was changed from

==========
fix warning on visual C for mips cpu detect

follow up warning fixs
cpu_id.cc(167): warning C4267: 'initializing': conversion from 'size_t' to
'int', possible loss of data
lint warning: cpu_id.cc:171:  Missing space before ( in if(  [whitespace/parens]
[5]

TBR=manojkumar.bhosale@imgtec.com
BUG=libyuv:634
TEST=try bots for windows.
==========

to

==========
fix warning on visual C for mips cpu detect

follow up warning fixs
cpu_id.cc(167): warning C4267: 'initializing': conversion from 'size_t' to
'int', possible loss of data
lint warning: cpu_id.cc:171:  Missing space before ( in if(  [whitespace/parens]
[5]

TBR=manojkumar.bhosale@imgtec.com
BUG=libyuv:634
TEST=try bots for windows.

Committed:
https://chromium.googlesource.com/libyuv/libyuv/+/34a29bf756234839c7829b0e76d...
==========

[fbarchard1, 2016-09-23 01:25:56]

Committed patchset #3 (id:40001) manually as
34a29bf756234839c7829b0e76d6e603aaa4e5d4 (presubmit successful).