Replicating can_open_windows layout tests runtime flag across OOPIFs.

components/test_runner/layout_test_runtime_flags.h

 // Copyright 2016 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.
 
 #ifndef COMPONENTS_TEST_RUNNER_LAYOUT_TEST_RUNTIME_FLAGS_H_
 #define COMPONENTS_TEST_RUNNER_LAYOUT_TEST_RUNTIME_FLAGS_H_
 
 #include <string>
 
 #include "base/logging.h"
@@ skipping 147 matching lines @@
   // Desired return value of WebFrameClient::runModalBeforeUnloadDialog.
   DEFINE_BOOL_LAYOUT_TEST_RUNTIME_FLAG(
       stay_on_page_after_handling_before_unload)
 
   // Indicates if the test already tracks a top loading frame (in any of the
   // renderer processes).  This flag is trying to prevent different renderer
   // processes from tracking different top loading frames (i.e. main frame in
   // one renderer and an OOPIF in another renderer).
   DEFINE_BOOL_LAYOUT_TEST_RUNTIME_FLAG(have_top_loading_frame)
 
+  // If true, new windows can be opened via javascript or by plugins. By
+  // default, set to false and can be toggled to true using
+  // setCanOpenWindows().
+  DEFINE_BOOL_LAYOUT_TEST_RUNTIME_FLAG(can_open_windows)
+
 #undef DEFINE_BOOL_LAYOUT_TEST_RUNTIME_FLAG
 #undef DEFINE_STRING_LAYOUT_TEST_RUNTIME_FLAG
 
   // Reports whether recursing over child frames is necessary.
   bool dump_child_frames() const {
     if (dump_as_text())
       return dump_child_frames_as_text();
     else if (dump_as_markup())
       return dump_child_frames_as_markup();
     else
       return dump_child_frame_scroll_positions();
   }
 
  private:
   TrackedDictionary dict_;
 
   DISALLOW_COPY_AND_ASSIGN(LayoutTestRuntimeFlags);
 };
 
 }  // namespace test_runner
 
 #endif  // COMPONENTS_TEST_RUNNER_LAYOUT_TEST_RUNTIME_FLAGS_H_