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

components/translate/ios/browser/BUILD.gn

Index: components/translate/ios/browser/BUILD.gn
diff --git a/components/translate/ios/browser/BUILD.gn b/components/translate/ios/browser/BUILD.gn
new file mode 100644
index 0000000000000000000000000000000000000000..420954ac4f7c8fdecb0b19d859e07427046c1891
--- /dev/null
+++ b/components/translate/ios/browser/BUILD.gn
@@ -0,0 +1,59 @@
+# Copyright 2015 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+import("//ios/web/js_compile.gni")
+
+source_set("browser") {
+  sources = [
+    "ios_translate_driver.h",
+    "ios_translate_driver.mm",
+    "js_language_detection_manager.h",
+    "js_language_detection_manager.mm",
+    "js_translate_manager.h",
+    "js_translate_manager.mm",
+    "language_detection_controller.h",
+    "language_detection_controller.mm",
+    "translate_controller.h",
+    "translate_controller.mm",
+  ]
+
+  deps = [
+    "//base",
+    "//components/translate/core/browser",
+    "//components/translate/core/common",
+    "//components/translate/core/language_detection",
+    "//ios/web",
+    "//url",
+    ":injected_js",
+  ]
+}
+
+js_compile_checked("injected_js") {
+  visibility = [ ":browser" ]
+  sources = [
+    "resources/language_detection.js",
+    "resources/translate_ios.js",
+  ]
+}
+
+source_set("unit_tests") {
+  testonly = true
+  sources = [
+    "js_translate_manager_unittest.mm",
+    "language_detection_controller_unittest.mm",
+    "translate_controller_unittest.mm",
+  ]
+
+  deps = [
+    "//base",
+    "//components/resources",
+    "//components/translate/core/common",
+    "//ios/web:test_support",
+    "//testing/gtest",
+    "//third_party/ocmock",
+    "//ui/base",
+    "//url",
+    ":browser",
+  ]
+}