Remove a bunch of TOOLKIT_GTK in content/ and gpu/, as well as NPAPI plugins on linux

chrome/chrome_tests.gypi

 # Copyright 2013 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.
 {
   'includes': [
     'js_unittest_vars.gypi',
   ],
   'targets': [
     {
       'target_name': 'interactive_ui_tests',
@@ skipping 1868 matching lines @@
             # TODO(estade): port to views.
             'browser/ui/webui/constrained_web_dialog_ui_browsertest.cc',
           ],
         }, { # else: toolkit_views == 0
           'sources/': [
             ['exclude', '^../ui/views/'],
             ['exclude', '^browser/ui/views/'],
           ],
         }],
         ['OS!="android" and OS!="ios"', {
+          'dependencies': [
+            # build time dependency.
+            '../v8/src/d8.gyp:d8#host',
+          ],
+        }],
+        ['OS!="android" and OS!="ios" and OS!="linux"', {
           # npapi test plugin doesn't build on android or ios
           'dependencies': [
             # build time dependency.
             '../content/content_shell_and_tests.gyp:copy_npapi_test_plugin',
-            '../v8/src/d8.gyp:d8#host',
           ],
         }],
         ['enable_app_list==0', {
           'sources/': [
             ['exclude', '^browser/ui/app_list/'],
             ['exclude', '^browser/ui/webui/app_list/'],
           ],
         }],
         ['enable_pepper_cdms==1', {
           'dependencies': [
@@ skipping 1000 matching lines @@
             ['enable_webrtc==1', {
               'dependencies': [
                 '../third_party/libjingle/libjingle.gyp:libjingle_webrtc'
               ]
             }],
           ],
         }]
     }],
   ],  # 'conditions'
 }