[Extensions] Fixed comment typo.

Bug: 973540
Change-Id: Idfe4997e53121ec843c2fa09bbbe390023363167
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1658836
Reviewed-by: Karan Bhatia <[email protected]>
Commit-Queue: David Bertoni <[email protected]>
Cr-Commit-Position: refs/heads/master@{#669001}
diff --git a/chrome/browser/extensions/service_worker_apitest.cc b/chrome/browser/extensions/service_worker_apitest.cc
index 3040ea5..f134939 100644
--- a/chrome/browser/extensions/service_worker_apitest.cc
+++ b/chrome/browser/extensions/service_worker_apitest.cc
@@ -1702,7 +1702,7 @@
   test_dir.WriteManifest(kManifest);
   test_dir.WriteFile(FILE_PATH_LITERAL("script.js"), kScript);
 
-  // Consruct this before loading the extension, since the extension will
+  // Construct this before loading the extension, since the extension will
   // immediately uninstall itself when it loads.
   extensions::TestExtensionRegistryObserver observer(
       extensions::ExtensionRegistry::Get(browser()->profile()));