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

sync/BUILD.gn

Index: sync/BUILD.gn
diff --git a/sync/BUILD.gn b/sync/BUILD.gn
index 9f064b5e5862890a10154a965e8a59670a574c74..64359cd4e3959574a95cc62034a8a8c2ba672eb8 100644
--- a/sync/BUILD.gn
+++ b/sync/BUILD.gn
@@ -434,10 +434,10 @@ source_set("sync_core") {
     "//google_apis",
     "//net",
     "//sql",
+    "//sync/protocol",
     "//third_party/leveldatabase",
     "//third_party/zlib",
     "//url",
-    "//sync/protocol",
   ]
 
   if (is_android) {
@@ -772,8 +772,8 @@ static_library("test_support_sync_fake_server") {
   deps = [
     "//base",
     "//net",
-    "//testing/gtest",
     "//sync",
+    "//testing/gtest",
     "//url",
   ]
 
@@ -840,10 +840,10 @@ if (is_android) {
   android_library("sync_java_test_support") {
     testonly = true
     deps = [
-      "android:sync_java",
       "//base:base_java",
       "//base:base_java_test_support",
       "//third_party/jsr-305:jsr_305_javalib",
+      "android:sync_java",
     ]
     DEPRECATED_java_in_dir = "test/android/javatests/src"
   }