Launch Google Update on uninstall.

chrome/installer/setup/setup_main.cc

Index: chrome/installer/setup/setup_main.cc
diff --git a/chrome/installer/setup/setup_main.cc b/chrome/installer/setup/setup_main.cc
index 4d0c8450342d72ead97cbf93d5d38750ac68f514..c99d3e6d52a37619b208225c532ece21198ada0b 100644
--- a/chrome/installer/setup/setup_main.cc
+++ b/chrome/installer/setup/setup_main.cc
@@ -68,6 +68,7 @@ using installer::MasterPreferences;
 const wchar_t kChromePipeName[] = L"\\\\.\\pipe\\ChromeCrashServices";
 const wchar_t kGoogleUpdatePipeName[] = L"\\\\.\\pipe\\GoogleCrashServices\\";
 const wchar_t kSystemPrincipalSid[] = L"S-1-5-18";
+const int kGoogleUpdateTimeoutMs = 20 * 1000;
 
 const MINIDUMP_TYPE kLargerDumpType = static_cast<MINIDUMP_TYPE>(
     MiniDumpWithProcessThreadData |  // Get PEB and TEB.
@@ -834,6 +835,41 @@ installer::InstallStatus UninstallProduct(
       cmd_line.GetProgram(), product, remove_all, force_uninstall, cmd_line);
 }
 
+// Tell Google Update that an uninstall has taken place.  This gives it a chance
+// to uninstall itself straight away if no more products are installed on the
+// system rather than waiting for the next time the scheduled task runs.
+// Success or failure of Google Update has no bearing on the success or failure
+// of Chrome's uninstallation.
+void UninstallGoogleUpdate(bool system_install) {
+  string16 uninstall_cmd(
+      GoogleUpdateSettings::GetUninstallCommandLine(system_install));
+  if (!uninstall_cmd.empty()) {
+    base::win::ScopedHandle process;
+    LOG(INFO) << "Launching Google Update's uninstaller: " << uninstall_cmd;
+    if (base::LaunchProcess(uninstall_cmd, base::LaunchOptions(),
+                            process.Receive())) {
+      int exit_code = 0;
+      if (base::WaitForExitCodeWithTimeout(process, &exit_code,
+                                           kGoogleUpdateTimeoutMs)) {
+        if (exit_code == 0) {
+          LOG(INFO) << "  normal exit.";
+        } else {
+          LOG(ERROR) << "Google Update uninstaller (" << uninstall_cmd
+                     << ") exited with code " << exit_code << ".";
+        }
+      } else {
+        // The process didn't finish in time, or GetExitCodeProcess failed.
+        LOG(ERROR) << "Google Update uninstaller (" << uninstall_cmd
+                   << ") is taking more than " << kGoogleUpdateTimeoutMs
+                   << " milliseconds to complete.";
+      }
+    } else {
+      PLOG(ERROR) << "Failed to launch Google Update uninstaller ("
+                  << uninstall_cmd << ")";
+    }
+  }
+}
+
 installer::InstallStatus UninstallProducts(
     const InstallationState& original_state,
     const InstallerState& installer_state,
@@ -860,6 +896,8 @@ installer::InstallStatus UninstallProducts(
       install_status = prod_status;
   }
 
+  UninstallGoogleUpdate(installer_state.system_install());
+
   return install_status;
 }