Refactor: move components/sync/../signin to components/signin/../

chrome/android/BUILD.gn

Index: chrome/android/BUILD.gn
diff --git a/chrome/android/BUILD.gn b/chrome/android/BUILD.gn
index 553b45e6efe13b6a5a36ddd2f4e37809eb4ef836..cd6316a76af9b11443332ce3f8efaa5c6cc813b6 100644
--- a/chrome/android/BUILD.gn
+++ b/chrome/android/BUILD.gn
@@ -364,6 +364,8 @@ junit_binary("chrome_junit_tests") {
     "//chrome/android/webapk/libs/common:common_java",
     "//components/bookmarks/common/android:bookmarks_java",
     "//components/invalidation/impl:java",
+    "//components/signin/core/browser/android:java",
+    "//components/signin/core/browser/android:signin_java_test_support",
     "//components/sync:sync_java_test_support",
     "//components/sync/android:sync_java",
     "//components/url_formatter/android:url_formatter_java",
@@ -433,6 +435,9 @@ android_library("chrome_test_java") {
     "//components/policy/android:policy_java",
     "//components/precache/android:precache_java",
     "//components/precache/android:precache_javatests",
+    "//components/signin/core/browser/android:java",
+    "//components/signin/core/browser/android:javatests",
+    "//components/signin/core/browser/android:signin_java_test_support",
     "//components/sync:sync_java_test_support",
     "//components/sync/android:sync_java",
     "//components/sync/android:sync_javatests",
@@ -757,6 +762,7 @@ android_library("chrome_sync_shell_test_apk_java") {
     "//chrome/test/android:chrome_java_test_support",
     "//components/bookmarks/common/android:bookmarks_java",
     "//components/policy/android:policy_java",
+    "//components/signin/core/browser/android:signin_java_test_support",
     "//components/sync:sync_java_test_support",
     "//components/sync:test_support_sync_proto_java",
     "//components/sync/android:sync_java",