Add ij_product flag to Builder for google_java_format plugin.

MOE_MIGRATED_REVID=147038132
diff --git a/core/src/main/java/com/google/googlejavaformat/java/GoogleJavaFormatVersion.java b/core/src/main/java/com/google/googlejavaformat/java/GoogleJavaFormatVersion.java
index 045db3c..e858d9e 100644
--- a/core/src/main/java/com/google/googlejavaformat/java/GoogleJavaFormatVersion.java
+++ b/core/src/main/java/com/google/googlejavaformat/java/GoogleJavaFormatVersion.java
@@ -14,9 +14,6 @@
 
 package com.google.googlejavaformat.java;
 
-import com.google.common.base.MoreObjects;
-
 public class GoogleJavaFormatVersion {
-  public static final String VERSION =
-      MoreObjects.firstNonNull(Main.class.getPackage().getImplementationVersion(), "dev");
+  public static final String VERSION = "1.0";
 }