Add simple mash context menu support.

chrome/browser/ui/ash/context_menu.cc

Index: chrome/browser/ui/ash/context_menu.cc
diff --git a/chrome/browser/ui/ash/context_menu.cc b/chrome/browser/ui/ash/context_menu.cc
new file mode 100644
index 0000000000000000000000000000000000000000..a4edd3ec9d7aa2730c217c54fb825f31d86195dd
--- /dev/null
+++ b/chrome/browser/ui/ash/context_menu.cc
@@ -0,0 +1,93 @@
+// Copyright 2016 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 "chrome/browser/ui/ash/context_menu.h"
+
+#include "ash/shelf/shelf_item_types.h"
+#include "chrome/browser/profiles/profile.h"
+#include "chrome/browser/profiles/profile_manager.h"
+#include "chrome/common/pref_names.h"
+#include "components/prefs/pref_service.h"
+#include "mojo/common/common_type_converters.h"
+
+ContextMenu::ContextMenu() {}
+
+ContextMenu::~ContextMenu() {}
+
+void ContextMenu::GetItemsAndInfo(uint32_t shelf_item_type,
+                                  int32_t shelf_item_id,
+                                  const GetItemsAndInfoCallback& callback) {
+  Profile* profile = ProfileManager::GetActiveUserProfile();
+  const bool can_user_modify_shelf_auto_hide_behavior =
+      profile->GetPrefs()
+          ->FindPreference(prefs::kShelfAutoHideBehaviorLocal)
+          ->IsUserModifiable();
+  const bool is_guest_session = profile->IsGuestSession();
+
+  // TODO(msw): Replace these test items with actual Chrome-provided items.
+  mojo::Array<mash::shelf::mojom::ContextMenuItemPtr> items;
+  if (shelf_item_id > 0) {
+    mash::shelf::mojom::ContextMenuItemPtr test_item =
+        mash::shelf::mojom::ContextMenuItem::New();
+    test_item->type = mash::shelf::mojom::ContextMenuItem::Type::ITEM;
+    test_item->command_id = 990;

[sky, 2016/03/18 20:30:57]

I'm going to assume all this is temporary and not comment on it.

+    test_item->label = mojo::String::From("CHROME TEST ITEM");
+    test_item->enabled = true;
+    items.push_back(std::move(test_item));
+
+    mash::shelf::mojom::ContextMenuItemPtr test_check =
+        mash::shelf::mojom::ContextMenuItem::New();
+    test_check->type = mash::shelf::mojom::ContextMenuItem::Type::CHECK;
+    test_check->command_id = 991;
+    test_check->label = mojo::String::From("CHROME TEST CHECK");
+    test_check->enabled = true;
+    test_check->checked = true;
+    items.push_back(std::move(test_check));
+
+    mash::shelf::mojom::ContextMenuItemPtr test_submenu =
+        mash::shelf::mojom::ContextMenuItem::New();
+    test_submenu->type = mash::shelf::mojom::ContextMenuItem::Type::SUBMENU;
+    test_submenu->command_id = 992;
+    test_submenu->label = mojo::String::From("CHROME TEST SUBMENU");
+    test_submenu->enabled = true;
+
+    mojo::Array<mash::shelf::mojom::ContextMenuItemPtr> test_submenu_items;
+    int radio_group_id = 1;
+
+    mash::shelf::mojom::ContextMenuItemPtr test_submenu_foo =
+        mash::shelf::mojom::ContextMenuItem::New();
+    test_submenu_foo->type = mash::shelf::mojom::ContextMenuItem::Type::RADIO;
+    test_submenu_foo->command_id = 993;
+    test_submenu_foo->label = mojo::String::From("CHROME TEST RADIO FOO");
+    test_submenu_foo->enabled = true;
+    test_submenu_foo->checked = true;
+    test_submenu_foo->radio_group_id = radio_group_id;
+    test_submenu_items.push_back(std::move(test_submenu_foo));
+
+    mash::shelf::mojom::ContextMenuItemPtr test_submenu_bar =
+        mash::shelf::mojom::ContextMenuItem::New();
+    test_submenu_bar->type = mash::shelf::mojom::ContextMenuItem::Type::RADIO;
+    test_submenu_bar->command_id = 994;
+    test_submenu_bar->label = mojo::String::From("CHROME TEST RADIO BAR");
+    test_submenu_bar->enabled = true;
+    test_submenu_bar->checked = false;
+    test_submenu_bar->radio_group_id = radio_group_id;
+    test_submenu_items.push_back(std::move(test_submenu_bar));
+
+    test_submenu->submenu = std::move(test_submenu_items);
+    items.push_back(std::move(test_submenu));
+
+    mash::shelf::mojom::ContextMenuItemPtr test_separator =
+        mash::shelf::mojom::ContextMenuItem::New();
+    test_separator->type = mash::shelf::mojom::ContextMenuItem::Type::SEPARATOR;
+    items.push_back(std::move(test_separator));
+  }
+
+  callback.Run(std::move(items), can_user_modify_shelf_auto_hide_behavior,
+               is_guest_session);
+}
+
+void ContextMenu::ExecuteCommand(int32_t command_id, int32_t event_flags) {
+  NOTIMPLEMENTED() << "Unknown command " << command_id;
+}