Run buildifier on platform/prebuilts/tools BUILD files

Change-Id: Ica695185b49cb2a10b7eb40ac7ace04eda7960e3
diff --git a/common/offline-m2/BUILD b/common/offline-m2/BUILD
index 0725374..4721f7a 100644
--- a/common/offline-m2/BUILD
+++ b/common/offline-m2/BUILD
@@ -92,4 +92,3 @@
     ]),
     visibility = ["//visibility:public"],
 )
-
diff --git a/common/uast/BUILD b/common/uast/BUILD
index f8bc80c..43a2ab2 100644
--- a/common/uast/BUILD
+++ b/common/uast/BUILD
@@ -1,4 +1,3 @@
-
 java_import(
     name = "uast-145.597.3",
     jars = ["uast-145.597.3.jar"],
diff --git a/linux-x86_64/kythe/extractors/BUILD b/linux-x86_64/kythe/extractors/BUILD
index 39b2468..fdd47b2 100644
--- a/linux-x86_64/kythe/extractors/BUILD
+++ b/linux-x86_64/kythe/extractors/BUILD
@@ -19,12 +19,11 @@
     name = "java_extractor",
     main_class = "com.google.devtools.kythe.extractors.java.bazel.JavaExtractor",
     runtime_deps = [
-            ":java_extractor_jar"
+        ":java_extractor_jar",
     ],
 )
 
-
 java_import(
-    name= "java_extractor_jar",
-    jars = [ "bazel_java_extractor.jar" ],
-)
\ No newline at end of file
+    name = "java_extractor_jar",
+    jars = ["bazel_java_extractor.jar"],
+)