[Sync] Move //sync to //components/sync.

ios/chrome/browser/BUILD.gn

Index: ios/chrome/browser/BUILD.gn
diff --git a/ios/chrome/browser/BUILD.gn b/ios/chrome/browser/BUILD.gn
index 688d753b0312035036b54912755145b8970fc955..ff475a758664b0655ed49f0c92dbb65bc1a2f34a 100644
--- a/ios/chrome/browser/BUILD.gn
+++ b/ios/chrome/browser/BUILD.gn
@@ -661,6 +661,7 @@ source_set("browser") {
     "//components/ssl_config",
     "//components/strings",
     "//components/suggestions",
+    "//components/sync",
     "//components/sync_driver",
     "//components/sync_sessions",
     "//components/syncable_prefs",
@@ -692,7 +693,6 @@ source_set("browser") {
     "//net:extras",
     "//services/shell/public/cpp",
     "//skia",
-    "//sync",
     "//third_party/brotli",
     "//third_party/google_toolbox_for_mac",
     "//third_party/libwebp:libwebp_dec",
@@ -823,6 +823,7 @@ source_set("test_support") {
     "//components/signin/core/browser:test_support",
     "//components/signin/ios/browser",
     "//components/signin/ios/browser:test_support",
+    "//components/sync",
     "//components/sync_driver",
     "//components/sync_driver:test_support",
     "//components/syncable_prefs",
@@ -836,7 +837,6 @@ source_set("test_support") {
     "//ios/public/provider/chrome/browser:test_support",
     "//ios/web",
     "//net:test_support",
-    "//sync",
     "//testing/gmock",
     "//testing/gtest",
     "//ui/base",