Update third_party/protobuf to protobuf-v3.0.0-beta-3

third_party/protobuf/.travis.yml

Index: third_party/protobuf/.travis.yml
diff --git a/third_party/protobuf/.travis.yml b/third_party/protobuf/.travis.yml
index e368826f0b5ec5b8b431d347c2980cc3460875f5..bcf3851bc216a77201b4b103a50b9c718f295362 100644
--- a/third_party/protobuf/.travis.yml
+++ b/third_party/protobuf/.travis.yml
@@ -7,10 +7,10 @@ language: cpp
 os:
   - linux
   - osx
-# The Objective C build needs Xcode 6.4 or later.
-osx_image: xcode7.1
+# The Objective C build needs Xcode 7.0 or later.
+osx_image: xcode7.2
 script:
-  - ./travis.sh $CONFIG
+  - ./tests.sh $CONFIG
 env:
   - CONFIG=cpp
   - CONFIG=cpp_distcheck
@@ -67,5 +67,18 @@ matrix:
       env: CONFIG=ruby22
     - os: osx
       env: CONFIG=jruby
+    # https://github.com/google/protobuf/issues/1253 - Started failing when
+    # we moved to an OS X image that is 10.11.
+    - os: osx
+      env: CONFIG=python_cpp
+    # xctool 0.2.8 seems to have a bug where it randomly kills tests saying
+    # they failed.
+    #   https://github.com/facebook/xctool/issues/619
+    #   https://github.com/google/protobuf/issues/1232
+    # travis updated their images to include 0.2.8:
+    #   https://blog.travis-ci.com/2016-03-23-xcode-image-updates
+    # Mark the iOS test as flakey so these failures don't turn things red.
+    - os: osx
+      env: CONFIG=objectivec_ios
 notifications:
   email: false