Give SxS distribution its own registration GUIDs.

chrome/installer/util/install_util.cc

Index: chrome/installer/util/install_util.cc
diff --git a/chrome/installer/util/install_util.cc b/chrome/installer/util/install_util.cc
index c8c037df823364a081b3ebac240cb974244d3e27..4205516dceef0edccae8954d5f2e0273ee228a41 100644
--- a/chrome/installer/util/install_util.cc
+++ b/chrome/installer/util/install_util.cc
@@ -58,6 +58,14 @@ const wchar_t kStageUpdatingChannels[] = L"updating_channels";
 const wchar_t kStageCreatingVisualManifest[] = L"creating_visual_manifest";
 const wchar_t kStageDeferringToHigherVersion[] = L"deferring_to_higher_version";
 
+#if defined(GOOGLE_CHROME_BUILD)
+const wchar_t kChromeUserModelId[] = L"Chrome";
+const wchar_t kChromeSxSUserModelId[] = L"ChromeSXS";
+#else
+const wchar_t kChromiumUserModelId[] = L"Chromium";
+#endif
+
+
 const wchar_t* const kStages[] = {
   NULL,
   kStagePreconditions,
@@ -121,6 +129,15 @@ HWND CreateUACForegroundWindow() {
 
 }  // namespace
 
+string16 InstallUtil::GetAppUserModelId() {

[gab, 2013/09/03 21:05:19]

This is GetBaseAppId() from BrowserDistribution.

[zturner, 2013/09/05 01:35:29]

Done.

+#if defined(GOOGLE_CHROME_BUILD)
+  return string16(IsChromeSxSProcess() ?
+      kChromeSxSUserModelId : kChromeUserModelId);
+#else
+  return kChromiumUserModelId;
+#endif
+}
+
 string16 InstallUtil::GetActiveSetupPath(BrowserDistribution* dist) {
   static const wchar_t kInstalledComponentsPath[] =
       L"Software\\Microsoft\\Active Setup\\Installed Components\\";