am 4d7f9ad7: am ece98e5f: Merge "Fix checkbuild targets, remove unittest_enum_mulitplejava_nano.proto."

* commit '4d7f9ad71771fff628e88d463af94b44457b7934':

* commit 'f105476adedac50be509ed36cbb187b92fca54d9':

* commit '94f522f907e3f34f70d9e7816b947e62fddbb267':
  You CANNOT change the global WITH_DEXPREOPT

* commit '49512cb01065b41c0113248c2c02800de1156d50':
  You CANNOT change the global WITH_DEXPREOPT

Bug: 14380196
Change-Id: I2b9e6db081558687afd5c20c7084824dfe1bb26e

* commit '58eb8e98d17971273548930a7e8d45e69995a2c8':
  Fix NPE when clearing an extension in nano protos

* commit 'd20f0a4260763531acf5de677e4830afe0bfc53e':
  Fix NPE when clearing an extension in nano protos

If ExtendableMessageNano doesn't have any unknown fields, trying to
clear an extension by setting it to null would throw an NPE.

Change-Id: I6abcdfcc0193de44f97b21dd6cc2f40604938a1a

* commit 'ddeaf25683a5aa4d6e7ef784c7380c9332cdb3ce':

* commit '33a6680ab98977cd5b9b7b03f4875b9265cfec3b':
  Support generation of Parcelable nano messages.

This CL adds the "parcelable_messages" option. When enabled, all
generated message classes will conform to the Android Parcelable
contract. This is achieved by introducing a new parent class for
generated classes which implements the required functionality.

Since the store_unknown_fields option also makes use of a superclass,
ExtendableMessageNano, we have two versions of the new Parcelable
superclass: one extending MessageNano, and one extending
ExtendableMessageNano. These classes are otherwise identical.

As these classes depend on Android framework jars, they are not
included in the host .jar build of the nanoproto library.

Finally, add a test suite for running tests of Android-specific
functionality, as this cannot be done on a desktop JVM.

Change-Id: Icc2a257f03317e947f7078dbb9857c3286857497

* commit '829f6c014ce69d04593d30652c8acc2f7a793851':
  Adds --ignore_service nano proto compiler flag

Nano proto compiler normally throws an error if any service is
defined. If --ignore-services=true is set, no error is thrown and the
service is simply skipped.

Change-Id: Id82583555085cc55550d03a485d3f0189885240b

* commit 'ea68d73c08b3b9319faef8ef9cd283e773a6ef20':
  Don't reset cachedSize to 0 in getSerializedSize

This avoids a race-condition when cachedSize is momentarily set to 0
for non-empty messages if multiple threads call getSerializedSize
(e.g. during serialization).

This is a retry of https://android-review.googlesource.com/#/c/88570/.
getSerializedSize() has been kept non-final so that messages generated
with a previous version of the compiler will not break.

Change-Id: I8d8154a10938cde579ae19c55eae55b1e70e0bda

* commit 'ce2f59915e0b41c935e3f72a2b7b71b6c19b6860':
  Revert "Don't reset cachedSize to 0 in getSerializedSize"

* commit 'ce2f59915e0b41c935e3f72a2b7b71b6c19b6860':
  Revert "Don't reset cachedSize to 0 in getSerializedSize"

This reverts commit c6e12c6702ca764486f952654ba1568f00efe813.

* commit 'ec0b12c34a6329d2f98003e9102fe2d75726c797':
  Don't reset cachedSize to 0 in getSerializedSize

* commit 'ec0b12c34a6329d2f98003e9102fe2d75726c797':
  Don't reset cachedSize to 0 in getSerializedSize

This avoids a race-condition when cachedSize is momentarily set to 0
for non-empty messages if multiple threads call getSerializedSize
(e.g. during serialization).

Change-Id: I15a8ded92edbf41bf1c8d787960c5bbbc8a323c5

* commit '51ef8f39de376fe71ce5d2c682abe4f974cf8074':
  Fix compile error on mac 10.9

* commit 'afc1553a9eb56eff742828c9c819eafa363cdcc9':
  Extension overhaul.

* commit '447f664aef6694bb9fb3db85d6166d908cde8a8d':
  Fix repeated packed field merging code for non-packed data.
  Add validation when parsing enum fields.

* commit '51ef8f39de376fe71ce5d2c682abe4f974cf8074':
  Fix compile error on mac 10.9

* commit 'afc1553a9eb56eff742828c9c819eafa363cdcc9':
  Extension overhaul.

* commit '447f664aef6694bb9fb3db85d6166d908cde8a8d':
  Fix repeated packed field merging code for non-packed data.
  Add validation when parsing enum fields.

* changes:
  Fix repeated packed field merging code for non-packed data.
  Add validation when parsing enum fields.

Enum fix is already included in the previous commit.

Bug: https://code.google.com/p/android/issues/detail?id=64893
Change-Id: I9fecff3c8822918a019028eb57fa39b361a2c960

Invalid values from the wire are silently ignored.
Unlike full/lite, the invalid values are not stored into the
unknown fields, because there's no way to get them out from
Nano's unknown fields without a matching Extension.

Edited README and slightly moved it towards a standalone
section for Nano, independent of the Micro section.

Change-Id: I2c1eb07f4d6d8f3aea242b8ddd95b9c966f3f177

* commit 'a8af729b5ef822971f025a7e8ff197545986910d':
  Allow whitespace in nano codegen options.