Quick fix to get 7DA counts for unified Chrome / App Launcher.

chrome/installer/setup/uninstall.cc

Index: chrome/installer/setup/uninstall.cc
diff --git a/chrome/installer/setup/uninstall.cc b/chrome/installer/setup/uninstall.cc
index 295028c86db6fc24a0fcbfb92a555ebf1de049e9..42d9a33e99959b9853abdfc62089e54488a6e5c9 100644
--- a/chrome/installer/setup/uninstall.cc
+++ b/chrome/installer/setup/uninstall.cc
@@ -1231,6 +1231,18 @@ InstallStatus UninstallProduct(const InstallationState& original_state,
     // Notify the shell that associations have changed since Chrome was likely
     // unregistered.
     SHChangeNotify(SHCNE_ASSOCCHANGED, SHCNF_IDLIST, NULL, NULL);
+
+    // TODO(huangs): Implement actual migration code and remove the hack below.
+    // If the deprecated stand-alone App Launcher is absent, uninstall the
+    // "shadow" App launcher created.
+    if (original_state.GetProductState(false,

[grt (UTC plus 2), 2013/05/07 20:52:02]

I think you want simply:
    if (installer_state.is_multi_install()) {
      ...
    }
so that this happens for all multi- Chrome browser uninstalls. This prevents
uninstallation of Chrome canary from erroneously deleting the app host's version
key.

[grt (UTC plus 2), 2013/05/07 20:57:30]

As discussed in person, this suggesting isn't quite right. I'd forgotten about
the case where the user has the old-style app launcher installed and only Chrome
is being uninstalled.

[huangs, 2013/05/08 01:22:02]

Changed how existing App Launcher is detected; updated comment.

[huangs, 2013/05/08 01:22:02]

Also added check for multi-install, to prevent useless "dr" flags being set for
Canary and non-multi-install Chrome.

+                                       BrowserDistribution::CHROME_APP_HOST)) {
+      BrowserDistribution* shadow_app_launcher_dist =
+          BrowserDistribution::GetSpecificDistribution(
+              BrowserDistribution::CHROME_APP_HOST);
+      InstallUtil::DeleteRegistryKey(reg_root,
+                                     shadow_app_launcher_dist->GetVersionKey());
+    }
   }
 
   if (product.is_chrome_frame()) {