Bump min SDK version to 10.9 and suppress deprecation warnings

Bump min SDK version to 10.9 and suppress deprecation warnings

This implies using a modern C++ library (libc++) which can use C++11
features we rely on for cross compiling to Android. This suppresses
deprecation warnings in base and skia as those libraries need to work
in environments that target a min sdk version of 10.6.

R=cstout@chromium.org, tonyg@chromium.org

Committed: https://chromium.googlesource.com/external/mojo/+/c4ebd590b6e2749a4ab3f97fd49bbd3a4d510759

[jamesr, 2015-08-31 21:37:08]

jamesr@chromium.org changed reviewers:
+ cstout@chromium.org

[tonyg, 2015-09-03 17:34:04]

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

[tonyg, 2015-09-03 17:34:04]

Not sure what's up w/ the trybots, but this lgtm

[jamesr, 2015-09-03 17:35:39]

I think the tree was busted when these patches hit the trybots.  I'll resend.

[cdotstout, 2015-09-08 21:10:20]

https://codereview.chromium.org/1318153005/diff/1/base/BUILD.gn
File base/BUILD.gn (right):

https://codereview.chromium.org/1318153005/diff/1/base/BUILD.gn#newcode774
base/BUILD.gn:774: # 10.6 vs 10.9 min sdk version
Can you clarify this comment?

[jamesr, 2015-09-08 21:16:51]

Good point, done.

[cdotstout, 2015-09-09 16:32:16]

lgtm

[jamesr, 2015-09-09 17:57:41]

Committed patchset #2 (id:20001) manually as
c4ebd590b6e2749a4ab3f97fd49bbd3a4d510759 (presubmit successful).