[Android]: Roll NDK to r10b-rc1.

[Android]: Roll NDK to r10b-rc1.

This roll updates the arm64 and x86_64 ABIS to include changes in NDK r10b-rc1.
This also removes android_tools/ndk_experimental and moves all 64 bit targets
over to using android_tools/ndk instead.

BUG=393903
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=283926

[rmcilroy, 2014-07-17 16:34:26]

Primiano, could you please take a look, thanks.

[Primiano Tucci (use gerrit), 2014-07-17 17:01:32]

LGTM. 
Just two things.
1. It looks like src/native_client ended up depending / having references to
ndk_experimental. I have absolutely no idea of the relationship between NaCL and
Android in general, but you might want to CC some NaCl folk.

2. Can you mention in the commit message that this upgrading to GCC 4.9 for
arm64?

[rmcilroy, 2014-07-17 17:56:11]

> Just two things.
> 1. It looks like src/native_client ended up depending / having references to
> ndk_experimental. I have absolutely no idea of the relationship between NaCL
and
> Android in general, but you might want to CC some NaCl folk.

+sehr: it looks like you've forked the android gyp files at some point for
native client - you might need to update them in the same manner as this CL.

> 2. Can you mention in the commit message that this upgrading to GCC 4.9 for
> arm64?

I'm not actually upgrading to 4.9, it was always at 4.9, it's just the stack
tool was using 4.8, which no longer exists in the new NDK for arm64.

[rmcilroy, 2014-07-17 17:56:14]

The CQ bit was checked by rmcilroy@chromium.org

[commit-bot: I haz the power, 2014-07-17 18:00:07]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/rmcilroy@chromium.org/404553002/1

[commit-bot: I haz the power, 2014-07-17 20:48:54]

FYI, CQ is re-trying this CL (attempt #1).
The failing builders are:
  android_dbg_triggered_tests on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/android_dbg_triggered...)

[commit-bot: I haz the power, 2014-07-17 21:19:41]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2014-07-17 21:19:42]

Try jobs failed on following builders:
  android_dbg_triggered_tests on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/android_dbg_triggered...)

[rmcilroy, 2014-07-17 22:13:04]

The CQ bit was checked by rmcilroy@chromium.org

[commit-bot: I haz the power, 2014-07-17 22:16:35]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/rmcilroy@chromium.org/404553002/1

[commit-bot: I haz the power, 2014-07-17 23:45:57]

Change committed as 283926