Rename the empty_jar() rule to be minimal_jar() since the jar file is no longer empty

Change-Id: I9a5fc75ecf30c4c63632113b79405fd28d1daa5e
diff --git a/tools/build/bazel/empty_jar.bzl b/tools/build/bazel/minimal_jar.bzl
similarity index 88%
rename from tools/build/bazel/empty_jar.bzl
rename to tools/build/bazel/minimal_jar.bzl
index b339819..ccc0c65 100644
--- a/tools/build/bazel/empty_jar.bzl
+++ b/tools/build/bazel/minimal_jar.bzl
@@ -13,7 +13,6 @@
 # limitations under the License.
 
 def _impl(ctx):
-    dir = ctx.label.name
     jar = ctx.outputs.jar
 
     cmd = [
@@ -22,11 +21,11 @@
 
     ctx.action(
         outputs = [jar],
-        progress_message = "Generating empty jar for %s" % ctx.attr.name,
+        progress_message = "Generating minimal jar for %s" % ctx.attr.name,
         command = ";\n".join(cmd),
     )
 
-empty_jar = rule(
+minimal_jar = rule(
     implementation = _impl,
     outputs = {"jar": "%{name}.jar"},
 )
diff --git a/tools/build/bazel/osgi_java_library.bzl b/tools/build/bazel/osgi_java_library.bzl
index eddf4ac..530384c 100644
--- a/tools/build/bazel/osgi_java_library.bzl
+++ b/tools/build/bazel/osgi_java_library.bzl
@@ -22,7 +22,7 @@
 load("//tools/build/bazel:java_sources.bzl", "java_sources")
 load("//tools/build/bazel:java_sources.bzl", "java_sources_alt")
 load("//tools/build/bazel:javadoc.bzl", "javadoc")
-load("//tools/build/bazel:empty_jar.bzl", "empty_jar")
+load("//tools/build/bazel:minimal_jar.bzl", "minimal_jar")
 load("@io_grpc_grpc_java//:java_grpc_library.bzl", "java_grpc_library")
 
 def _auto_name():
@@ -385,8 +385,8 @@
             deps = deps,
             visibility = visibility,
         )
-    empty_jar(name = name + "-sources", visibility = visibility)
-    empty_jar(name = name + "-javadoc", visibility = visibility)
+    minimal_jar(name = name + "-sources", visibility = visibility)
+    minimal_jar(name = name + "-javadoc", visibility = visibility)
 
 """
     Creates an OSGI jar and test jar file from a set of source and test files.
@@ -545,8 +545,8 @@
     if not suppress_javadocs:
         javadoc(name = name + "-javadoc", deps = deps, srcs = srcs, visibility = visibility)
     else:
-        empty_jar(name = name + "-javadoc", visibility = visibility)
-        empty_jar(name = name + "-sources", visibility = visibility)
+        minimal_jar(name = name + "-javadoc", visibility = visibility)
+        minimal_jar(name = name + "-sources", visibility = visibility)
 
     if test_srcs != []:
         native.java_library(