<third_party/WebKit> manual revert of blink's r168724

Adding the -S argument to skip import site seems to be causing some
issues on our CI for now.

Change-Id: I551c85b580ce1e148517202c884ae95df5adc841
Reviewed-by: Zeno Albisser <zeno.albisser@digia.com>

chromium/third_party/WebKit/Source/bindings/core/v8/generated.gyp

@@ -80,7 +80,6 @@
       # Update that regex if command line changes (other than changing flags)
       'action': [
         'python',
-        '-S',  # skip 'import site' to speed up startup
         '<(bindings_scripts_dir)/idl_compiler.py',
         '--cache-dir',
         '<(bindings_scripts_output_dir)',

chromium/third_party/WebKit/Source/bindings/modules/v8/generated.gyp

@@ -68,7 +68,6 @@
       # Update that regex if command line changes (other than changing flags)
       'action': [
         'python',
-        '-S',  # skip 'import site' to speed up startup
         '<(bindings_scripts_dir)/idl_compiler.py',
         '--cache-dir',
         '<(bindings_scripts_output_dir)',