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 33a522e04104bb5816b4e2fcae386448c0a9715d..d7551c67adfe80121405937321a24372821fcce9 100644
--- a/chrome/browser/extensions/api/commands/command_service.cc
+++ b/chrome/browser/extensions/api/commands/command_service.cc
@@ -300,14 +300,24 @@ 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
+  // key binding updates occur in loaded.
+  if (extension->location() != Manifest::COMPONENT)
+    UpdateKeybindings(extension);
 }
 
 void CommandService::OnExtensionUninstalled(
     content::BrowserContext* browser_context,
     const Extension* extension,
     extensions::UninstallReason reason) {
-  RemoveKeybindingPrefs(extension->id(), std::string());
+  if (extension->location() != Manifest::COMPONENT)
+    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,