Bump GWT to 2.8.0 final release

Change-Id: Ica57a0c2ebd31ccd39b25870a674cd25e31b49b2

lib/gwt/BUCK

diff --git a/lib/gwt/BUCK b/lib/gwt/BUCK
index bd3953a..26e55d3 100644
--- a/lib/gwt/BUCK
+++ b/lib/gwt/BUCK
@@ -1,11 +1,11 @@
 include_defs('//bucklets/maven_jar.bucklet')
 
-VERSION = '2.8.0-rc2'
+VERSION = '2.8.0'
 
 maven_jar(
   name = 'user',
   id = 'com.google.gwt:gwt-user:' + VERSION,
-  sha1 = 'ad99b09a626c20cce2bdacf3726a51b2cd16b99e',
+  sha1 = '518579870499e15531f454f35dca0772d7fa31f7',
   license = 'Apache2.0',
   attach_source = False,
 )
@@ -13,7 +13,7 @@
 maven_jar(
   name = 'dev',
   id = 'com.google.gwt:gwt-dev:' + VERSION,
-  sha1 = 'd70a6feb4661c07488090cb81303415e9110b15a',
+  sha1 = 'f160a61272c5ebe805cd2d3d3256ed3ecf14893f',
   license = 'Apache2.0',
   attach_source = False,
 )

pom.xml

diff --git a/pom.xml b/pom.xml
index 34e6333..a85d1a1 100644
--- a/pom.xml
+++ b/pom.xml
@@ -26,6 +26,7 @@
   <properties>
     <Gerrit-ApiType>plugin</Gerrit-ApiType>
     <Gerrit-ApiVersion>${project.version}</Gerrit-ApiVersion>
+    <GWT-Version>2.8.0</GWT-Version>
   </properties>
 
   <build>
@@ -69,7 +70,7 @@
       <plugin>
         <groupId>org.codehaus.mojo</groupId>
         <artifactId>gwt-maven-plugin</artifactId>
-        <version>2.8.0-rc2</version>
+        <version>${GWT-Version}</version>
         <configuration>
           <module>com.googlesource.gerrit.plugins.cookbook.HelloForm</module>
           <disableClassMetadata>true</disableClassMetadata>
@@ -104,7 +105,7 @@
     <dependency>
       <groupId>com.google.gwt</groupId>
       <artifactId>gwt-user</artifactId>
-      <version>2.7.0</version>
+      <version>${GWT-Version}</version>
       <scope>provided</scope>
     </dependency>
     <dependency>