[PoC] Reformat all BUILD.gn and *.gni files with new gn.

build/config/android/rules.gni

Index: build/config/android/rules.gni
diff --git a/build/config/android/rules.gni b/build/config/android/rules.gni
index 090f55700ca812a3d4c02daf497d0d76a60a739d..67900298eaa5d5db65a2aa5ab40d60856788468a 100644
--- a/build/config/android/rules.gni
+++ b/build/config/android/rules.gni
@@ -932,8 +932,8 @@ template("junit_binary") {
       "//testing/android/junit:junit_test_support",
       "//third_party/junit",
       "//third_party/mockito:mockito_java",
-      "//third_party/robolectric:robolectric_java",
       "//third_party/robolectric:android-all-4.3_r2-robolectric-0",
+      "//third_party/robolectric:robolectric_java",
     ]
   }
 }
@@ -1515,8 +1515,8 @@ template("android_apk") {
     proguard(_proguard_target) {
       deps = [
         ":$build_config_target",
-        ":$process_resources_target",
         ":$java_target",
+        ":$process_resources_target",
       ]
       inputs = [
                  _build_config,
@@ -1689,8 +1689,8 @@ template("android_apk") {
 
       native_libs_dir = _native_libs_dir
       deps = [
-        ":${_prepare_native_target_name}",
         ":${_manifest_rule}",
+        ":${_prepare_native_target_name}",
       ]
       incremental_deps = deps
     }