Rewrite the extra action info files if the data within them changes.

--
MOS_MIGRATED_REVID=128468615

src/main/java/com/google/devtools/build/lib/rules/extra/ExtraActionInfoFileWriteAction.java

diff --git a/src/main/java/com/google/devtools/build/lib/rules/extra/ExtraActionInfoFileWriteAction.java b/src/main/java/com/google/devtools/build/lib/rules/extra/ExtraActionInfoFileWriteAction.java
index 817234c..f1db755 100644
--- a/src/main/java/com/google/devtools/build/lib/rules/extra/ExtraActionInfoFileWriteAction.java
+++ b/src/main/java/com/google/devtools/build/lib/rules/extra/ExtraActionInfoFileWriteAction.java
@@ -24,7 +24,6 @@
 import com.google.devtools.build.lib.concurrent.ThreadSafety.Immutable;
 import com.google.devtools.build.lib.util.Fingerprint;
 import com.google.devtools.build.lib.util.Preconditions;
-
 import java.io.IOException;
 import java.io.OutputStream;
 
@@ -68,6 +67,7 @@
     Fingerprint f = new Fingerprint();
     f.addString(UUID);
     f.addString(shadowedAction.getKey());
+    f.addBytes(shadowedAction.getExtraActionInfo().build().toByteArray());
     return f.hexDigestAndReset();
   }
 }