Observe OnExtensionLoaded to trigger update of chrome.commands keybindings for component extensions.

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

Index: chrome/browser/extensions/api/commands/command_service.cc
diff --git a/chrome/browser/extensions/api/commands/command_service.cc b/chrome/browser/extensions/api/commands/command_service.cc
index d38090c601d519129ca6b9b5fcc41512a4d67fd0..55c0be6f35e1e314871f044dfcc6003ccac3b46f 100644
--- a/chrome/browser/extensions/api/commands/command_service.cc
+++ b/chrome/browser/extensions/api/commands/command_service.cc
@@ -308,7 +308,10 @@ void CommandService::OnExtensionWillBeInstalled(
     bool is_update,
     bool from_ephemeral,
     const std::string& old_name) {
-  UpdateKeybindings(extension);
+  // Component extensions don't generate normal install and uninstall events so
+  // those are handled in OnExtensionLoaded.
+  if (extension->location() != Manifest::COMPONENT)
+    UpdateKeybindings(extension);
 }
 
 void CommandService::OnExtensionUninstalled(
@@ -318,6 +321,12 @@ void CommandService::OnExtensionUninstalled(
   RemoveKeybindingPrefs(extension->id(), std::string());
 }
 
+void CommandService::OnExtensionLoaded(content::BrowserContext* browser_context,
+                                       const Extension* extension) {
+  if (extension->location() == Manifest::COMPONENT)
+    UpdateKeybindings(extension);
+}
+
 void CommandService::UpdateKeybindingPrefs(const std::string& extension_id,
                                            const std::string& command_name,
                                            const std::string& keystroke) {