Revert of Fix sbox_validation_tests & Make isolate_driver.py include the executable itself

tools/isolate_driver.py

Index: tools/isolate_driver.py
diff --git a/tools/isolate_driver.py b/tools/isolate_driver.py
index 3d2b7551979e765db14a8bad868837821457fa83..c5d80fc01a1a04aaa26e300ddaa5dbf1abc620db 100755
--- a/tools/isolate_driver.py
+++ b/tools/isolate_driver.py
@@ -118,9 +118,9 @@
   if item.endswith('.isolated.gen.json'):
     return True
   IGNORED = (
-    '.a', '.cc', '.css', '.dat', '.def', '.frag', '.h', '.html', '.isolate',
-    '.js', '.json', '.manifest', '.o', '.obj', '.pak', '.png', '.pdb', '.py',
-    '.strings', '.test', '.txt', '.vert',
+    '.a', '.cc', '.css', '.def', '.frag', '.h', '.html', '.js', '.json',
+    '.manifest', '.o', '.obj', '.pak', '.png', '.pdb', '.strings', '.test',
+    '.txt', '.vert',
   )
   # ninja files use native path format.
   ext = os.path.splitext(item)[1]
@@ -180,12 +180,11 @@
       return i[:-4]
     return i
 
-  def is_exe(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]
-    # On POSIX, executables have no extension.
-    if ext not in ('', '.dll', '.dylib', '.exe', '.nexe', '.so'):
+    if ext not in ['.dll', '.nexe', '.so', '.dylib']:
       return False
 
     # Check for execute access and strip directories. This gets rid of all the
@@ -193,7 +192,7 @@
     p = os.path.join(build_dir, i)
     return os.access(p, os.X_OK) and not os.path.isdir(p)
 
-  return filter(is_exe, map(filter_item, dependencies))
+  return filter(f, map(filter_item, dependencies))
 
 
 def create_wrapper(args, isolate_index, isolated_index):