Remove remaining references to the test NPAPI plugin.

It was generating warnings while symbolizing crash traces in layout tests.

Change-Id: I62f5b35fa1d8b724316ad171cbe5b58f6b29eb9a
Reviewed-on: https://chromium-review.googlesource.com/998617Reviewed-by: Nico Weber <thakis@chromium.org>
Commit-Queue: Jeremy Roman <jbroman@chromium.org>
Cr-Commit-Position: refs/heads/master@{#548876}

chrome/tools/build/win/TESTS

@@ -5,5 +5,4 @@ icudt42.dll
 icudt46.dll
 icudt.dll
 icudtl.dat
-plugins\np_test_netscape_plugin.dll
 fonts\*

third_party/WebKit/Tools/Scripts/webkitpy/layout_tests/breakpad/dump_reader_multipart.py

@@ -175,7 +175,7 @@ class DumpReaderLinux(DumpReaderMultipart):
     """Linux breakpad dump reader."""
 
     def _binaries_to_symbolize(self):
-        return ['content_shell', 'libtest_netscape_plugin.so', 'libosmesa.so']
+        return ['content_shell', 'libosmesa.so']
 
     def _file_extension(self):
         return 'dmp'

tools/checkperms/checkperms.py

@@ -56,10 +56,6 @@ IGNORED_EXTENSIONS = (
 EXECUTABLE_PATHS = (
   'chrome/test/data/app_shim/app_shim_32_bit.app/contents/'
       'macos/app_mode_loader',
-  'chrome/test/data/extensions/uitest/plugins/plugin.plugin/contents/'
-      'macos/testnetscapeplugin',
-  'chrome/test/data/extensions/uitest/plugins_private/plugin.plugin/contents/'
-      'macos/testnetscapeplugin',
 )
 
 # These files must not have the executable bit set. This is mainly a performance