Uninstall multi-install Chrome Frame when updated.

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 a315908e608967df728da08fcf5afa2eed6df690..97f2162a4a0a552942d5e3b5656f5d2e8a3110e2 100644
--- a/chrome/installer/util/install_util.cc
+++ b/chrome/installer/util/install_util.cc
@@ -57,6 +57,8 @@ const wchar_t kStageUnpacking[] = L"unpacking";
 const wchar_t kStageUpdatingChannels[] = L"updating_channels";
 const wchar_t kStageCreatingVisualManifest[] = L"creating_visual_manifest";
 const wchar_t kStageDeferringToHigherVersion[] = L"deferring_to_higher_version";
+const wchar_t kStageUninstallingBinaries[] = L"uninstalling_binaries";
+const wchar_t kStageUninstallingChromeFrame[] = L"uninstalling_chrome_frame";
 
 const wchar_t* const kStages[] = {
   NULL,
@@ -78,6 +80,8 @@ const wchar_t* const kStages[] = {
   kStageConfiguringAutoLaunch,
   kStageCreatingVisualManifest,
   kStageDeferringToHigherVersion,
+  kStageUninstallingBinaries,
+  kStageUninstallingChromeFrame,
 };
 
 COMPILE_ASSERT(installer::NUM_STAGES == arraysize(kStages),