Add gn implementation for //components/history/ios/browser.

components/BUILD.gn

Index: components/BUILD.gn
diff --git a/components/BUILD.gn b/components/BUILD.gn
index ce458d9e2a51f394d15e3fbc06ef30bc1a97bb40..a0d7f94bf0085a5fcb5c817ed09d042bb7fb6dce 100644
--- a/components/BUILD.gn
+++ b/components/BUILD.gn
@@ -36,6 +36,9 @@ group("all_components") {
     "//components/device_event_log",
     "//components/dom_distiller/core",
     "//components/google/core/browser",
+    "//components/history/core/browser",
+    "//components/history/core/common",
+    "//components/history/core/test",
     "//components/keyed_service/core",
     "//components/password_manager/core/browser",
     "//components/password_manager/core/common",
@@ -92,9 +95,6 @@ group("all_components") {
       "//components/gcm_driver/crypto",
       "//components/gcm_driver/instance_id",
       "//components/history/content/browser",
-      "//components/history/core/browser",
-      "//components/history/core/common",
-      "//components/history/core/test",
       "//components/invalidation/impl",
       "//components/json_schema",
       "//components/keyed_service/content",
@@ -221,6 +221,7 @@ group("all_components") {
     deps += [
       "//components/autofill/ios/browser",
       "//components/dom_distiller/ios",
+      "//components/history/ios/browser",
       "//components/keyed_service/ios",
       "//components/webp_transcode",
     ]
@@ -332,6 +333,8 @@ test("components_unittests") {
     "//components/data_usage/core:unit_tests",
     "//components/dom_distiller/core:unit_tests",
     "//components/google/core/browser:unit_tests",
+    "//components/history/core/browser:unit_tests",
+    "//components/history/core/common:unit_tests",
     "//components/keyed_service/core:unit_tests",
     "//components/net_log:unit_tests",
     "//components/password_manager/core/browser:unit_tests",
@@ -395,8 +398,6 @@ test("components_unittests") {
       "//components/gcm_driver/instance_id:unit_tests",
       "//components/gcm_driver:unit_tests",
       "//components/history/content/browser:unit_tests",
-      "//components/history/core/browser:unit_tests",
-      "//components/history/core/common:unit_tests",
       "//components/invalidation/impl:unit_tests",
       "//components/json_schema:unit_tests",
       "//components/keyed_service/content:unit_tests",