Add automatic retry of cab extraction.

It fails occasionally with:
One or more files could not be expanded. Delta Package Expander Returned 0x80070002
Expanding File ..\third_party\directxsdk\files\redist\jun2010_d3dx9_43_x86.cab Incomplete, Error Code=0x80070002
Error Description: The system cannot find the file specified.

NOTRY=true
TBR=sky@chromium.org
BUG=
TEST=


Review URL: http://codereview.chromium.org/8883029

git-svn-id: http://src.chromium.org/svn/trunk/src/build@113653 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

extract_from_cab.py

@@ -21,7 +21,13 @@ def main():
   level = subprocess.call(
       ['expand', cab_path, '-F:' + archived_file, output_dir])
   if level != 0:
-    return level
+    print 'Cab extraction(%s, %s, %s) failed.' % (
+        cab_path, archived_file, output_dir)
+    print 'Trying a second time.'
+    level = subprocess.call(
+        ['expand', cab_path, '-F:' + archived_file, output_dir])
+    if level != 0:
+      return level
 
   # The expand utility preserves the modification date and time of the archived
   # file. Touch the extracted file. This helps build systems that compare the