Mac: Open chrome://apps when a deprecated app launcher shim connects.

chrome/browser/ui/app_list/app_list_service_disabled_mac.mm

Index: chrome/browser/ui/app_list/app_list_service_disabled_mac.mm
diff --git a/chrome/browser/ui/app_list/app_list_service_disabled_mac.mm b/chrome/browser/ui/app_list/app_list_service_disabled_mac.mm
new file mode 100644
index 0000000000000000000000000000000000000000..6589eb54faa91d66b3e677c285ae0b0de9e74e96
--- /dev/null
+++ b/chrome/browser/ui/app_list/app_list_service_disabled_mac.mm
@@ -0,0 +1,54 @@
+// 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/app_list/app_list_service_disabled_mac.h"
+
+#include "base/compiler_specific.h"
+#import "base/mac/foundation_util.h"
+#import "chrome/browser/app_controller_mac.h"
+#include "chrome/browser/apps/app_shim/app_shim_handler_mac.h"
+#include "chrome/common/mac/app_mode_common.h"
+
+namespace {
+
+// Stub handler for the old app_list shim that opens chrome://apps when a copy
+// of the App Launcher .app bundle created with Chrome < m52 tries to connect.
+class AppsPageShimHandler : public apps::AppShimHandler {
+ public:
+  explicit AppsPageShimHandler(void (*action)(Profile*)) : action_(action) {}
+
+ private:
+  // AppShimHandler:
+  void OnShimLaunch(apps::AppShimHandler::Host* host,
+                    apps::AppShimLaunchType launch_type,
+                    const std::vector<base::FilePath>& files) override {
+    AppController* controller =
+        base::mac::ObjCCastStrict<AppController>([NSApp delegate]);
+    action_([controller lastProfile]);
+
+    // Always close the shim process immediately.
+    host->OnAppLaunchComplete(apps::APP_SHIM_LAUNCH_DUPLICATE_HOST);
+  }
+  void OnShimClose(apps::AppShimHandler::Host* host) override {}
+  void OnShimFocus(apps::AppShimHandler::Host* host,
+                   apps::AppShimFocusType focus_type,
+                   const std::vector<base::FilePath>& files) override {}
+  void OnShimSetHidden(apps::AppShimHandler::Host* host, bool hidden) override {
+  }
+  void OnShimQuit(apps::AppShimHandler::Host* host) override {}
+
+  void (*action_)(Profile*);
+
+  DISALLOW_COPY_AND_ASSIGN(AppsPageShimHandler);
+};
+
+}  // namespace
+
+void InitAppsPageLegacyShimHandler(void (*action)(Profile*)) {
+  static AppsPageShimHandler* handler = nullptr;
+  if (!handler) {
+    handler = new AppsPageShimHandler(action);
+    apps::AppShimHandler::RegisterHandler(app_mode::kAppListModeId, handler);
+  }
+}