Make sure keybindings removed don't come back during extension update.

chrome/browser/extensions/api/commands/command_service.h

Index: chrome/browser/extensions/api/commands/command_service.h
diff --git a/chrome/browser/extensions/api/commands/command_service.h b/chrome/browser/extensions/api/commands/command_service.h
index 50c0af7d8eba5d276904ae2c31593c176b9e0728..8270e01e08a3613e9b081765495d892fb17b888d 100644
--- a/chrome/browser/extensions/api/commands/command_service.h
+++ b/chrome/browser/extensions/api/commands/command_service.h
@@ -109,6 +109,12 @@ class CommandService : public ProfileKeyedAPI,
                          std::string command_name,
                          bool allow_overrides);
 
+  // Removes all keybindings for a given extension by its |extension_id|.
+  // |command_name| is optional and if specified, causes only the command with
+  // the name |command_name| to be removed.
+  void RemoveKeybindingPrefs(const std::string& extension_id,
+                             const std::string& command_name);
+
   // Update the keybinding prefs (for a command with a matching |extension_id|
   // and |command_name|) to |keystroke|. If the command had another key assigned
   // that key assignment will be removed.
@@ -151,12 +157,6 @@ class CommandService : public ProfileKeyedAPI,
   // keybinding assignment.
   void AssignInitialKeybindings(const extensions::Extension* extension);
 
-  // Removes all keybindings for a given extension by its |extension_id|.
-  // |command_name| is optional and if specified, causes only the command with
-  // the name |command_name| to be removed.
-  void RemoveKeybindingPrefs(const std::string& extension_id,
-                             const std::string& command_name);
-
   bool GetExtensionActionCommand(const std::string& extension_id,
                                  QueryType query_type,
                                  extensions::Command* command,