[ios] Remove IDC_CLOSE_TAB

ios/chrome/browser/ui/commands/browser_commands.h

Index: ios/chrome/browser/ui/commands/browser_commands.h
diff --git a/ios/chrome/browser/ui/commands/browser_commands.h b/ios/chrome/browser/ui/commands/browser_commands.h
new file mode 100644
index 0000000000000000000000000000000000000000..94d30e1ef9ba344af0c804eaf1c1a4ba3f54e6f3
--- /dev/null
+++ b/ios/chrome/browser/ui/commands/browser_commands.h
@@ -0,0 +1,17 @@
+// Copyright 2017 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.
+
+#ifndef IOS_CHROME_BROWSER_UI_COMMANDS_BROWSER_COMMANDS_H_
+#define IOS_CHROME_BROWSER_UI_COMMANDS_BROWSER_COMMANDS_H_
+
+// Protocol for commands that will generally be handled by the "current tab",
+// which in practice is the BrowserViewController instance displaying the tab.
+@protocol BrowserCommands
+
+// Close the current tab.
+- (void)closeCurrentTab;
+
+@end
+
+#endif  // IOS_CHROME_BROWSER_UI_COMMANDS_BROWSER_COMMANDS_H_