[Mac] Remove BrowserCommandExecutor protocol.

chrome/browser/global_keyboard_shortcuts_mac_browsertest.mm

+// 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 "chrome/browser/global_keyboard_shortcuts_mac.h"
+
+#import <Cocoa/Cocoa.h>
+
+#include "base/run_loop.h"
+#include "chrome/browser/extensions/extension_browsertest.h"
+#include "chrome/browser/ui/browser.h"
+#include "chrome/browser/ui/browser_commands.h"
+#include "chrome/browser/ui/browser_window.h"
+#include "chrome/browser/ui/tabs/tab_strip_model.h"
+#import "ui/events/test/cocoa_test_event_utils.h"
+
+using cocoa_test_event_utils::SynthesizeKeyEvent;
+
+using GlobalKeyboardShortcutsTest = ExtensionBrowserTest;
+
+// Test that global keyboard shortcuts are handled by the native window.
+IN_PROC_BROWSER_TEST_F(GlobalKeyboardShortcutsTest, SwitchTabsMac) {
+  NSWindow* ns_window = browser()->window()->GetNativeWindow();
+  TabStripModel* tab_strip = browser()->tab_strip_model();
+
+  // Set up window with 2 tabs.
+  chrome::NewTab(browser());
+  EXPECT_EQ(2, tab_strip->count());
+  EXPECT_TRUE(tab_strip->IsTabSelected(1));
+
+  // Ctrl+Tab goes to the next tab, which loops back to the first tab.
+  [ns_window performKeyEquivalent:SynthesizeKeyEvent(
+      ns_window, true, ui::VKEY_TAB, NSControlKeyMask)];
+  EXPECT_TRUE(tab_strip->IsTabSelected(0));
+
+  // Cmd+2 goes to the second tab.
+  [ns_window performKeyEquivalent:SynthesizeKeyEvent(
+      ns_window, true, ui::VKEY_2, NSCommandKeyMask)];
+  EXPECT_TRUE(tab_strip->IsTabSelected(1));
+
+  // Cmd+{ goes to the previous tab.
+  [ns_window performKeyEquivalent:SynthesizeKeyEvent(
+      ns_window, true, ui::VKEY_OEM_4, NSShiftKeyMask | NSCommandKeyMask)];
+  EXPECT_TRUE(tab_strip->IsTabSelected(0));
+}