update version

BUG=
TBR=alokp@chromium.org

Review URL: https://codereview.appspot.com/13020044
diff --git a/src/common/version.h b/src/common/version.h
index 4893762..a997729 100644
--- a/src/common/version.h
+++ b/src/common/version.h
@@ -1,7 +1,7 @@
 #define MAJOR_VERSION 1
 #define MINOR_VERSION 2
 #define BUILD_VERSION 0
-#define BUILD_REVISION 2438
+#define BUILD_REVISION 2439
 
 #define STRINGIFY(x) #x
 #define MACRO_STRINGIFY(x) STRINGIFY(x)