Make isolate_driver.py only add .dll/.so/.dylib for component builds' generated files.

tools/isolate_driver.py

 #!/usr/bin/env python
 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """Adaptor script called through build/isolate.gypi.
 
 Creates a wrapping .isolate which 'includes' the original one, that can be
 consumed by tools/swarming_client/isolate.py. Path variables are determined
 based on the current working directory. The relative_cwd in the .isolated file
@@ skipping 159 matching lines @@
       return i[:-4]
     if i.endswith('.dylib.TOC'):
       # Remove only the suffix .TOC, not the .dylib!
       return i[:-4]
     if i.endswith('.dll.lib'):
       # Remove only the suffix .lib, not the .dll!
       return i[:-4]
     return i
 
   def f(i):
+    # This script is only for adding new binaries that are created as part of
+    # the component build.
+    ext = os.path.splitext(i)[1]
+    if ext not in ['.dll', '.so', '.dylib']:
+      return False
+
     # Check for execute access and strip directories. This gets rid of all the
     # phony rules.
     p = os.path.join(build_dir, i)
     return os.access(p, os.X_OK) and not os.path.isdir(p)
 
   return filter(f, map(filter_item, dependencies))
 
 
 def create_wrapper(args, isolate_index, isolated_index):
   """Creates a wrapper .isolate that add dynamic libs.
@@ skipping 103 matching lines @@
 
   swarming_client = os.path.join(SRC_DIR, 'tools', 'swarming_client')
   sys.stdout.flush()
   result = subprocess.call(
       [sys.executable, os.path.join(swarming_client, 'isolate.py')] + args)
   return result
 
 
 if __name__ == '__main__':
   sys.exit(main())