plugin_vm: minor typo fix in the installer view

Tests: built and ran browsertests

Change-Id: I264e6c4b792e80775cb8ad81407374acd92127e8
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2454966
Commit-Queue: Daniel Ng <danielng@google.com>
Commit-Queue: Joel Hockey <joelhockey@chromium.org>
Auto-Submit: Daniel Ng <danielng@google.com>
Reviewed-by: Joel Hockey <joelhockey@chromium.org>
Cr-Commit-Position: refs/heads/master@{#814567}

chrome/browser/ui/views/plugin_vm/plugin_vm_installer_view.h

@@ -75,7 +75,7 @@ class PluginVmInstallerView : public views::BubbleDialogDelegateView,
   // views::BubbleDialogDelegateView implementation.
   void AddedToWidget() override;
 
-  base::string16 GetDownloadProgressMessage(uint64_t downlaoded_bytes,
+  base::string16 GetDownloadProgressMessage(uint64_t bytes_downloaded,
                                             int64_t content_length) const;
   void SetTitleLabel();
   void SetMessageLabel();