Add support for Java nano protocol buffers for Android.

Add support for Java nano protocol buffers for Android.

This CL adds a new dependency on the protocol buffer compiler
from the android source tree, since this compiler supports
generating Java files using the nano runtime.

The initial version of this dependency is 2.2.0a, but checked
out as what the Android 4.4.4 Release 2.0.1 tag points to.

This CL adds a new protoc binary (for compiling protos) that supports
this, and also adds a Java library with the runtime.

To simplify use of this, it also updates build/protoc_java.gypi to
support generating nano protos by specifying an optional
proto_runtime argument. The argument defaults to 'lite' which does
the same thing as before this change, and setting it to 'nano'
generates the new style Java files.

The plan is to quickly deprecate the 'lite' runtime for Java, since
it is too big and uses too many methods.

BUG=377891
Committed: https://crrev.com/a076bf3d5a204c2e2db473a687b34c17830866bc
Cr-Commit-Position: refs/heads/master@{#292965}

[nyquist, 2014-08-28 17:18:37]

nyquist@chromium.org changed reviewers:
+ cjhopman@chromium.org

[nyquist, 2014-08-28 17:18:37]

cjhopman: PTAL

[cjhopman, 2014-08-29 18:07:55]

lgtm

[nyquist, 2014-08-29 20:52:37]

nyquist@chromium.org changed reviewers:
+ darin@chromium.org

[nyquist, 2014-08-29 20:52:38]

darin: Please review changes in //third_party/

[darin (slow to review), 2014-08-29 21:19:19]

LGTM

https://codereview.chromium.org/511283003/diff/40001/third_party/android_prot...
File third_party/android_protobuf/README.chromium (right):

https://codereview.chromium.org/511283003/diff/40001/third_party/android_prot...
third_party/android_protobuf/README.chromium:19: which generates Java-files
which less methods than the protobuf lite compiler,
nit: "which less" -> "with less" or perhaps "with fewer"?

[nyquist, 2014-08-29 21:27:23]

https://codereview.chromium.org/511283003/diff/40001/third_party/android_prot...
File third_party/android_protobuf/README.chromium (right):

https://codereview.chromium.org/511283003/diff/40001/third_party/android_prot...
third_party/android_protobuf/README.chromium:19: which generates Java-files
which less methods than the protobuf lite compiler,
On 2014/08/29 21:19:19, darin wrote:
> nit: "which less" -> "with less" or perhaps "with fewer"?

Done.
Thanks! I think this started out with "which has less" at some point. Anyway,
went with "with fewer".

[nyquist, 2014-09-02 17:34:02]

The CQ bit was checked by nyquist@chromium.org

[commit-bot: I haz the power, 2014-09-02 17:34:32]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/nyquist@chromium.org/511283003/60001

[commit-bot: I haz the power, 2014-09-02 18:41:27]

Committed patchset #4 (id:60001) as d8ae0a79834531e41912de44b9e212ffa7eb2785

[nyquist, 2014-09-02 22:15:22]

A revert of this CL (patchset #4 id:60001) has been created in
https://codereview.chromium.org/534703004/ by nyquist@chromium.org.

The reason for reverting is: Breaks some workflows and also should get new
quota..

[commit-bot: I haz the power, 2014-09-10 03:19:38]

Patchset 4 (id:??) landed as
https://crrev.com/a076bf3d5a204c2e2db473a687b34c17830866bc
Cr-Commit-Position: refs/heads/master@{#292965}