Introduce a layering in the invalidation component as public and impl

chrome/android/BUILD.gn

Index: chrome/android/BUILD.gn
diff --git a/chrome/android/BUILD.gn b/chrome/android/BUILD.gn
index 7760de2aa3a907034e736366e0a54fb90b6e177e..9c406f4d169927cdbe3efe7e2cdf5150dd0f5b1b 100644
--- a/chrome/android/BUILD.gn
+++ b/chrome/android/BUILD.gn
@@ -124,7 +124,7 @@ android_library("chrome_java") {
     "//components/dom_distiller/android:dom_distiller_content_java",
     "//components/dom_distiller/android:dom_distiller_core_java",
     "//components/gcm_driver/android:gcm_driver_java",
-    "//components/invalidation:java",
+    "//components/invalidation/impl:java",
     "//components/navigation_interception/android:navigation_interception_java",
     "//components/service_tab_launcher:service_tab_launcher_java",
     "//components/precache/android:precache_java",
@@ -451,8 +451,8 @@ android_library("chrome_javatests") {
     "//chrome/test/android:chrome_java_test_support",
     "//components/bookmarks/common/android:bookmarks_java",
     "//components/dom_distiller/android:dom_distiller_core_java",
-    "//components/invalidation:java",
-    "//components/invalidation:javatests",
+    "//components/invalidation/impl:java",
+    "//components/invalidation/impl:javatests",
     "//components/navigation_interception/android:navigation_interception_java",
     "//components/precache/android:precache_java",
     "//components/precache/android:precache_javatests",
@@ -538,7 +538,7 @@ if (false) {
       "//base:base_java",
       "//base:base_java_test_support",
       "//chrome/test/android:chrome_java_test_support",
-      "//components/invalidation:java",
+      "//components/invalidation/impl:java",
       "//content/public/android:content_java",
       "//content/public/test/android:content_java_test_support",
       "//sync/android:sync_java",
@@ -617,7 +617,7 @@ android_library("chrome_shared_test_java") {
     "//chrome/test/android:chrome_java_test_support",
     "//components/bookmarks/common/android:bookmarks_java",
     "//components/dom_distiller/android:dom_distiller_core_java",
-    "//components/invalidation:java",
+    "//components/invalidation/impl:java",
     "//components/web_contents_delegate_android:web_contents_delegate_android_java",
     "//content/public/android:content_java",
     "//content/public/test/android:content_java_test_support",