Uninstall multi-install Chrome Frame when updated.

chrome/installer/util/installer_state.cc

Index: chrome/installer/util/installer_state.cc
diff --git a/chrome/installer/util/installer_state.cc b/chrome/installer/util/installer_state.cc
index 3c64a1edc7ba12833b347145a4c0d5840a071a9c..ed85dc3f20999b4de4b1779cececfb23cd38e0de 100644
--- a/chrome/installer/util/installer_state.cc
+++ b/chrome/installer/util/installer_state.cc
@@ -72,10 +72,10 @@ bool InstallerState::IsMultiInstallUpdate(const MasterPreferences& prefs,
 
 InstallerState::InstallerState()
     : operation_(UNINITIALIZED),
+      state_type_(BrowserDistribution::CHROME_BROWSER),
       multi_package_distribution_(NULL),
       level_(UNKNOWN_LEVEL),
       package_type_(UNKNOWN_PACKAGE_TYPE),
-      state_type_(BrowserDistribution::CHROME_BROWSER),
       root_key_(NULL),
       msi_(false),
       verbose_logging_(false),
@@ -84,10 +84,10 @@ InstallerState::InstallerState()
 
 InstallerState::InstallerState(Level level)
     : operation_(UNINITIALIZED),
+      state_type_(BrowserDistribution::CHROME_BROWSER),
       multi_package_distribution_(NULL),
       level_(UNKNOWN_LEVEL),
       package_type_(UNKNOWN_PACKAGE_TYPE),
-      state_type_(BrowserDistribution::CHROME_BROWSER),
       root_key_(NULL),
       msi_(false),
       verbose_logging_(false),
@@ -99,6 +99,8 @@ InstallerState::InstallerState(Level level)
 void InstallerState::Initialize(const CommandLine& command_line,
                                 const MasterPreferences& prefs,
                                 const InstallationState& machine_state) {
+  Clear();
+
   bool pref_bool;
   if (!prefs.GetBool(master_preferences::kSystemLevel, &pref_bool))
     pref_bool = false;
@@ -616,6 +618,22 @@ bool InstallerState::IsFileInUse(const base::FilePath& file) {
                                              OPEN_EXISTING, 0, 0)).IsValid();
 }
 
+void InstallerState::Clear() {
+  operation_ = UNINITIALIZED;
+  target_path_.clear();
+  state_key_.clear();
+  state_type_ = BrowserDistribution::CHROME_BROWSER;
+  products_.clear();
+  multi_package_distribution_ = NULL;
+  critical_update_version_ = base::Version();
+  level_ = UNKNOWN_LEVEL;
+  package_type_ = UNKNOWN_PACKAGE_TYPE;
+  root_key_ = NULL;
+  msi_ = false;
+  verbose_logging_ = false;
+  ensure_google_update_present_ = false;
+}
+
 bool InstallerState::AnyExistsAndIsInUse(
     const InstallationState& machine_state,
     uint32 file_bits) const {