Switch out the setup api for using the cabinet API directly....

chrome/installer/mini_installer/mini_installer.cc

Index: chrome/installer/mini_installer/mini_installer.cc
===================================================================
--- chrome/installer/mini_installer/mini_installer.cc	(revision 78171)
+++ chrome/installer/mini_installer/mini_installer.cc	(working copy)
@@ -34,6 +34,7 @@
 #include <shlwapi.h>
 
 #include "chrome/installer/mini_installer/appid.h"
+#include "chrome/installer/mini_installer/decompress.h"
 #include "chrome/installer/mini_installer/mini_installer.h"
 #include "chrome/installer/mini_installer/pe_resource.h"
 
@@ -508,19 +509,17 @@
 
   if (::lstrlen(setup_path) > 0) {
     // Uncompress LZ compressed resource. Setup is packed with 'MSCF'
-    // as opposed to old DOS way of 'SZDD'. Hence use SetupInstallFile
-    // instead of LZCopy.
-    // Note that the API will automatically delete the original file
-    // if the extraction was successful.
-    if (!SetupInstallFile(NULL, NULL, setup_path, NULL, setup_dest_path,
-                          SP_COPY_DELETESOURCE | SP_COPY_SOURCE_ABSOLUTE,
-                          NULL, NULL))
-      return false;
+    // as opposed to old DOS way of 'SZDD'. Hence we don't use LZCopy.
+    bool success = mini_installer::Expand(setup_path, setup_dest_path);
+    DeleteFile(setup_path);
+    if (success) {
+      if (!SafeStrCopy(setup_path, setup_path_size, setup_dest_path)) {
+        ::DeleteFile(setup_dest_path);
+        success = false;
+      }
+    }
 
-    if (!SafeStrCopy(setup_path, setup_path_size, setup_dest_path))
-      return false;
-
-    return true;
+    return success;
   }
 
   // setup.exe still not found. So finally check is it was sent as 'BN'