Give SxS distribution its own registration GUIDs.

chrome/installer/util/browser_distribution.cc

Index: chrome/installer/util/browser_distribution.cc
diff --git a/chrome/installer/util/browser_distribution.cc b/chrome/installer/util/browser_distribution.cc
index 8a249272c802c84b96462548f3bf4ed1c7956b8a..b311d59d35a2bd628efcbb85a8bc08671e5986eb 100644
--- a/chrome/installer/util/browser_distribution.cc
+++ b/chrome/installer/util/browser_distribution.cc
@@ -199,6 +199,18 @@ string16 BrowserDistribution::GetBaseAppId() {
   return L"Chromium";
 }
 
+string16 BrowserDistribution::GetBrowserProgIdPrefix() {
+  // This used to be "ChromiumHTML", but was forced to become "ChromiumHTM"
+  // because of http://crbug.com/153349.  See the declaration of this function
+  // in the header file for more details.
+  return L"ChromiumHTM";
+}
+
+string16 BrowserDistribution::GetBrowserProgIdDesc() {
+  return L"Chromium HTML Document";
+}
+
+
 string16 BrowserDistribution::GetInstallSubDir() {
   return L"Chromium";
 }