Move JavaScriptDialogManager, JavascriptAppModalDialogViews to components/app_modal_dialogs

components/app_modal_dialogs/javascript_dialog_manager_client.cc

Index: components/app_modal_dialogs/javascript_dialog_manager_client.cc
diff --git a/components/app_modal_dialogs/javascript_dialog_manager_client.cc b/components/app_modal_dialogs/javascript_dialog_manager_client.cc
new file mode 100644
index 0000000000000000000000000000000000000000..c893098d5e80145d69f6a69dfbd19dc21ffaf54d
--- /dev/null
+++ b/components/app_modal_dialogs/javascript_dialog_manager_client.cc
@@ -0,0 +1,23 @@
+// Copyright 2014 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.
+
+#include "components/app_modal_dialogs/javascript_dialog_manager_client.h"
+
+namespace {
+
+JavaScriptDialogManagerClient* client = nullptr;
+
+}  //namespace
+
+void SetJavaScriptDialogManagerClient(
+    scoped_ptr<JavaScriptDialogManagerClient> new_client) {
+  delete client;
+  client = new_client.release();
+}
+
+JavaScriptDialogManagerClient* GetJavaScriptDialogManagerClient() {
+  CHECK(client);
+  return client;
+}
+