Update //third_party/protobuf to version 3.

third_party/protobuf/protoc-artifacts/pom.xml

Index: third_party/protobuf/protoc-artifacts/pom.xml
diff --git a/third_party/protobuf/protoc-artifacts/pom.xml b/third_party/protobuf/protoc-artifacts/pom.xml
new file mode 100644
index 0000000000000000000000000000000000000000..e9728a0639a4a12bf7508576dafe8c9b19857176
--- /dev/null
+++ b/third_party/protobuf/protoc-artifacts/pom.xml
@@ -0,0 +1,134 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+  <parent>
+    <groupId>com.google</groupId>
+    <artifactId>google</artifactId>
+    <version>1</version>
+  </parent>
+  <groupId>com.google.protobuf</groupId>
+  <artifactId>protoc</artifactId>
+  <version>3.0.0-beta-2</version>
+  <packaging>pom</packaging>
+  <name>Protobuf Compiler</name>
+  <description>
+    Protobuf Compiler (protoc) is a compiler for .proto files. It generates
+    language-specific code for Protobuf messages and RPC interfaces.
+  </description>
+  <inceptionYear>2008</inceptionYear>
+  <url>https://developers.google.com/protocol-buffers/</url>
+  <licenses>
+    <license>
+      <name>New BSD license</name>
+      <url>http://www.opensource.org/licenses/bsd-license.php</url>
+      <distribution>repo</distribution>
+    </license>
+  </licenses>
+  <scm>
+    <url>https://github.com/google/protobuf</url>
+    <connection>
+      scm:git:https://github.com/google/protobuf.git
+    </connection>
+  </scm>
+  <build>
+    <extensions>
+      <extension>
+        <groupId>kr.motd.maven</groupId>
+        <artifactId>os-maven-plugin</artifactId>
+        <version>1.2.3.Final</version>
+      </extension>
+    </extensions>
+    <plugins>
+      <plugin>
+        <groupId>org.codehaus.mojo</groupId>
+        <artifactId>exec-maven-plugin</artifactId>
+        <version>1.1.1</version>
+        <executions>
+          <execution>
+            <phase>compile</phase>
+            <goals>
+              <goal>exec</goal>
+            </goals>
+          </execution>
+        </executions>
+        <configuration>
+          <executable>bash</executable>
+          <arguments>
+            <argument>build-protoc.sh</argument>
+            <argument>${os.detected.name}</argument>
+            <argument>${os.detected.arch}</argument>
+          </arguments>
+        </configuration>
+      </plugin>
+      <plugin>
+        <groupId>org.codehaus.mojo</groupId>
+        <artifactId>build-helper-maven-plugin</artifactId>
+        <version>1.8</version>
+        <executions>
+          <execution>
+            <id>attach-artifacts</id>
+            <phase>package</phase>
+            <goals>
+              <goal>attach-artifact</goal>
+            </goals>
+            <configuration>
+              <artifacts>
+                <artifact>
+                  <file>${basedir}/target/protoc.exe</file>
+                  <classifier>${os.detected.name}-${os.detected.arch}</classifier>
+                  <type>exe</type>
+                </artifact>
+              </artifacts>
+            </configuration>
+          </execution>
+        </executions>
+      </plugin>
+    </plugins>
+  </build>
+  <profiles>
+    <profile>
+      <id>release</id>
+      <properties>
+        <!-- Specify the staging repository to deploy to. This can be left
+             empty for the first deployment, and Sonatype will create one. For
+             subsequent deployments it should be set to what Sonatype has
+             created, so that all deployments will go to the same repository.
+             -->
+        <staging.repository></staging.repository>
+      </properties>
+      <build>
+        <plugins>
+          <plugin>
+            <groupId>org.apache.maven.plugins</groupId>
+            <artifactId>maven-gpg-plugin</artifactId>
+            <version>1.5</version>
+            <executions>
+              <execution>
+                <id>sign-artifacts</id>
+                <phase>verify</phase>
+                <goals>
+                  <goal>sign</goal>
+                </goals>
+              </execution>
+            </executions>
+          </plugin>
+          <plugin>
+            <groupId>org.sonatype.plugins</groupId>
+            <artifactId>nexus-staging-maven-plugin</artifactId>
+            <version>1.6.3</version>
+            <extensions>true</extensions>
+            <configuration>
+               <serverId>sonatype-nexus-staging</serverId>
+               <nexusUrl>https://oss.sonatype.org/</nexusUrl>
+               <skipStagingRepositoryClose>true</skipStagingRepositoryClose>
+               <autoReleaseAfterClose>false</autoReleaseAfterClose>
+               <stagingRepositoryId>${staging.repository}</stagingRepositoryId>
+            </configuration>
+          </plugin>
+        </plugins>
+      </build>
+    </profile>
+  </profiles>
+</project>