tools/gn: another round of fixes to keep bootstrap working

tools/gn: another round of fixes to keep bootstrap working

This patch includes metrics_hashes.cc and md5.cc to the base's sources
list to fix the undefined errors as below:

base/metrics/histogram.o: In function
`base::Histogram::Histogram(std::string const&, int, int, base::BucketRanges const*)':
histogram.cc:(.text+0xfc0): undefined reference to `base::HashMetricName(std::string const&)'

BUG=569821
TEST=./tools/gn/bootstrap/bootstrap.py
TBR=brettw@chromium.org

Committed: https://crrev.com/9608e1467c41eaabab78e68da96a00f475aa25d6
Cr-Commit-Position: refs/heads/master@{#366194}

[tfarina, 2015-12-18 22:44:15]

TBRing...

[tfarina, 2015-12-18 22:44:33]

The CQ bit was checked by tfarina@chromium.org

[commit-bot: I haz the power, 2015-12-18 22:44:56]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1534313002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1534313002/1

[commit-bot: I haz the power, 2015-12-18 23:10:18]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-12-18 23:11:17]

Description was changed from

==========
tools/gn: another round of fixes to keep bootstrap working

This patch includes metrics_hashes.cc and md5.cc to the base's sources
list to fix the undefined errors as below:

base/metrics/histogram.o: In function
`base::Histogram::Histogram(std::string const&, int, int, base::BucketRanges
const*)':
histogram.cc:(.text+0xfc0): undefined reference to
`base::HashMetricName(std::string const&)'

BUG=569821
TEST=./tools/gn/bootstrap/bootstrap.py
TBR=brettw@chromium.org
==========

to

==========
tools/gn: another round of fixes to keep bootstrap working

This patch includes metrics_hashes.cc and md5.cc to the base's sources
list to fix the undefined errors as below:

base/metrics/histogram.o: In function
`base::Histogram::Histogram(std::string const&, int, int, base::BucketRanges
const*)':
histogram.cc:(.text+0xfc0): undefined reference to
`base::HashMetricName(std::string const&)'

BUG=569821
TEST=./tools/gn/bootstrap/bootstrap.py
TBR=brettw@chromium.org

Committed: https://crrev.com/9608e1467c41eaabab78e68da96a00f475aa25d6
Cr-Commit-Position: refs/heads/master@{#366194}
==========

[commit-bot: I haz the power, 2015-12-18 23:11:18]

Patchset 1 (id:??) landed as
https://crrev.com/9608e1467c41eaabab78e68da96a00f475aa25d6
Cr-Commit-Position: refs/heads/master@{#366194}

[Dirk Pranke, 2015-12-19 19:53:00]

dpranke@chromium.org changed reviewers:
+ dpranke@chromium.org

[Dirk Pranke, 2015-12-19 19:53:01]

lgtm