Simple REST URL cache

--
Change-Id: Ied34278c63c74aaf2db5ad90d5f076b3bddbe396
Reviewed-on: https://bazel-review.git.corp.google.com/#/c/4061/
MOS_MIGRATED_REVID=128165927
diff --git a/src/main/java/com/google/devtools/build/lib/remote/RemoteOptions.java b/src/main/java/com/google/devtools/build/lib/remote/RemoteOptions.java
index da8c3b9..78747c8 100644
--- a/src/main/java/com/google/devtools/build/lib/remote/RemoteOptions.java
+++ b/src/main/java/com/google/devtools/build/lib/remote/RemoteOptions.java
@@ -22,6 +22,16 @@
  */
 public final class RemoteOptions extends OptionsBase {
   @Option(
+    name = "rest_cache_url",
+    defaultValue = "null",
+    category = "remote",
+    help =
+        "A base URL for a RESTful cache server for storing build artifacts."
+            + "It has to support PUT, GET, and HEAD requests."
+  )
+  public String restCacheUrl;
+
+  @Option(
     name = "hazelcast_node",
     defaultValue = "null",
     category = "remote",