[iOS] Add Tab Groups files

This CL add empty files for tab groups.

Bug: 1501837
Change-Id: I70c02a54ef3ccedd2ee70cf952dcab349b1d5f46
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5033774
Commit-Queue: Louis Romero <lpromero@google.com>
Reviewed-by: Louis Romero <lpromero@google.com>
Cr-Commit-Position: refs/heads/main@{#1227311}

ios/chrome/browser/ui/tab_switcher/tab_grid/grid/BUILD.gn

@@ -46,6 +46,7 @@ source_set("grid") {
     "//ios/chrome/browser/ui/tab_switcher/tab_grid:tab_grid_metrics",
     "//ios/chrome/browser/ui/tab_switcher/tab_grid:tab_grid_page_mutator",
     "//ios/chrome/browser/ui/tab_switcher/tab_grid:tab_grid_paging",
+    "//ios/chrome/browser/ui/tab_switcher/tab_grid/grid/tab_groups",
     "//ios/chrome/browser/ui/tab_switcher/tab_grid/tab_context_menu:tab_item",
     "//ios/chrome/browser/ui/tab_switcher/tab_grid/toolbars",
     "//ios/chrome/browser/ui/tab_switcher/tab_grid/toolbars:toolbars_ui",

ios/chrome/browser/ui/tab_switcher/tab_grid/grid/tab_groups/BUILD.gn

@@ -0,0 +1,21 @@
+# Copyright 2023 The Chromium Authors
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+source_set("tab_groups") {
+  sources = [
+    "tab_groups_coordinator.h",
+    "tab_groups_coordinator.mm",
+    "tab_groups_mediator.h",
+    "tab_groups_mediator.mm",
+  ]
+  deps = []
+}
+
+source_set("tab_groups_ui") {
+  sources = [
+    "tab_groups_view_controller.h",
+    "tab_groups_view_controller.mm",
+  ]
+  deps = []
+}

ios/chrome/browser/ui/tab_switcher/tab_grid/grid/tab_groups/tab_groups_coordinator.h

@@ -0,0 +1,8 @@
+// Copyright 2023 The Chromium Authors
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef IOS_CHROME_BROWSER_UI_TAB_SWITCHER_TAB_GRID_GRID_TAB_GROUPS_TAB_GROUPS_COORDINATOR_H_
+#define IOS_CHROME_BROWSER_UI_TAB_SWITCHER_TAB_GRID_GRID_TAB_GROUPS_TAB_GROUPS_COORDINATOR_H_
+
+#endif  // IOS_CHROME_BROWSER_UI_TAB_SWITCHER_TAB_GRID_GRID_TAB_GROUPS_TAB_GROUPS_COORDINATOR_H_

ios/chrome/browser/ui/tab_switcher/tab_grid/grid/tab_groups/tab_groups_coordinator.mm

@@ -0,0 +1,5 @@
+// Copyright 2023 The Chromium Authors
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#import "ios/chrome/browser/ui/tab_switcher/tab_grid/grid/tab_groups/tab_groups_coordinator.h"

ios/chrome/browser/ui/tab_switcher/tab_grid/grid/tab_groups/tab_groups_mediator.h

@@ -0,0 +1,8 @@
+// Copyright 2023 The Chromium Authors
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef IOS_CHROME_BROWSER_UI_TAB_SWITCHER_TAB_GRID_GRID_TAB_GROUPS_TAB_GROUPS_MEDIATOR_H_
+#define IOS_CHROME_BROWSER_UI_TAB_SWITCHER_TAB_GRID_GRID_TAB_GROUPS_TAB_GROUPS_MEDIATOR_H_
+
+#endif  // IOS_CHROME_BROWSER_UI_TAB_SWITCHER_TAB_GRID_GRID_TAB_GROUPS_TAB_GROUPS_MEDIATOR_H_

ios/chrome/browser/ui/tab_switcher/tab_grid/grid/tab_groups/tab_groups_mediator.mm

@@ -0,0 +1,5 @@
+// Copyright 2023 The Chromium Authors
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#import "ios/chrome/browser/ui/tab_switcher/tab_grid/grid/tab_groups/tab_groups_mediator.h"

ios/chrome/browser/ui/tab_switcher/tab_grid/grid/tab_groups/tab_groups_view_controller.h

@@ -0,0 +1,8 @@
+// Copyright 2023 The Chromium Authors
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef IOS_CHROME_BROWSER_UI_TAB_SWITCHER_TAB_GRID_GRID_TAB_GROUPS_TAB_GROUPS_VIEW_CONTROLLER_H_
+#define IOS_CHROME_BROWSER_UI_TAB_SWITCHER_TAB_GRID_GRID_TAB_GROUPS_TAB_GROUPS_VIEW_CONTROLLER_H_
+
+#endif  // IOS_CHROME_BROWSER_UI_TAB_SWITCHER_TAB_GRID_GRID_TAB_GROUPS_TAB_GROUPS_VIEW_CONTROLLER_H_

ios/chrome/browser/ui/tab_switcher/tab_grid/grid/tab_groups/tab_groups_view_controller.mm

@@ -0,0 +1,5 @@
+// Copyright 2023 The Chromium Authors
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#import "ios/chrome/browser/ui/tab_switcher/tab_grid/grid/tab_groups/tab_groups_view_controller.h"