Increase errorprone heap size

Increase the size of the errorprone heap to fix OOM exceptions.

Bug: 221480398
Test: forrest
Change-Id: Ia74fd4ecc57f08bcbaa1388e0734ee0cce8ae1a4
diff --git a/java/base.go b/java/base.go
index 42d7733..1537a78 100644
--- a/java/base.go
+++ b/java/base.go
@@ -839,7 +839,7 @@
 		}
 		errorProneFlags = append(errorProneFlags, j.properties.Errorprone.Javacflags...)
 
-		flags.errorProneExtraJavacFlags = "${config.ErrorProneFlags} " +
+		flags.errorProneExtraJavacFlags = "${config.ErrorProneHeapFlags} ${config.ErrorProneFlags} " +
 			"'" + strings.Join(errorProneFlags, " ") + "'"
 		flags.errorProneProcessorPath = classpath(android.PathsForSource(ctx, config.ErrorProneClasspath))
 	}