Remove last 3 layout tests that expect NPAPI

ppapi/tests/blink_deprecated_test_plugin.cc

 // Copyright 2015 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.
 //
 // A simple C++ Pepper plugin for exercising deprecated PPAPI interfaces in
 // Blink layout tests.
 //
 // Most layout tests should prefer to use the normal Blink test plugin, with the
 // MIME type application/x-blink-test-plugin. For layout tests that absolutely
 // need to test deprecated synchronous scripting interfaces, this plugin can be
@@ skipping 320 matching lines @@
   }
 
   // pp::Instance overrides
   bool Init(uint32_t argc, const char* argn[], const char* argv[]) override {
     for (uint32_t i = 0; i < argc; ++i)
       attributes_[argn[i]] = argv[i];
 
     if (HasAttribute("testwindowopen"))
       return TestWindowOpen();
 
+    if (HasAttribute("initscript"))
+      ExecuteScript(attributes_["initscript"]);
+
     uint32_t event_classes = 0;
     if (HasAttribute("keydownscript"))
         event_classes |= PP_INPUTEVENT_CLASS_KEYBOARD;
     if (HasAttribute("mousedownscript"))
         event_classes |= PP_INPUTEVENT_CLASS_MOUSE;
     RequestFilteringInputEvents(event_classes);
 
     return true;
   }
 
@@ skipping 66 matching lines @@
 
 }  // namespace
 
 namespace pp {
 
 Module* CreateModule() {
   return new BlinkDeprecatedTestModule();
 }
 
 }  // namespace pp