Revert of Test Keeping NaCl plugins used in app background pages alive when active.

ppapi/tests/extensions/extensions.gyp

Index: ppapi/tests/extensions/extensions.gyp
diff --git a/ppapi/tests/extensions/extensions.gyp b/ppapi/tests/extensions/extensions.gyp
index 70af2687d892b3b4ab29e9e9bf921da826df78a4..d063b83f47e5397c8da0274ca6210f2f85b03cf0 100644
--- a/ppapi/tests/extensions/extensions.gyp
+++ b/ppapi/tests/extensions/extensions.gyp
@@ -29,24 +29,5 @@
         ],
       },
     },
-    {
-      'target_name': 'ppapi_tests_extensions_background_keepalive',
-      'type': 'none',
-      'variables': {
-        'nexe_target': 'ppapi_tests_extensions_background_keepalive',
-        # Only newlib build is used in tests, no need to build others.
-        'build_newlib': 1,
-        'build_glibc': 0,
-        'build_pnacl_newlib': 0,
-        'nexe_destination_dir': 'test_data/ppapi/tests/extensions/background_keepalive',
-        'sources': [
-          'background_keepalive/background.cc',
-        ],
-        'test_files': [
-          'background_keepalive/background.js',
-          'background_keepalive/manifest.json',
-        ],
-      },
-    },
   ],
 }