Ignore JavaScript messages (alert/confirm/prompt) during unload handlers.

chrome/browser/tab_contents/web_contents_unittest.cc

 // Copyright (c) 2011 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.
 
 #include <vector>
 
 #include "base/logging.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/prefs/pref_service.h"
 #include "chrome/browser/prefs/pref_value_store.h"
@@ skipping 1506 matching lines @@
   TestInterstitialPage* interstitial =
       new TestInterstitialPage(contents(), true, kGURL, &state, &deleted);
   TestInterstitialPageStateGuard state_guard(interstitial);
   interstitial->Show();
   interstitial->TestDidNavigate(1, kGURL);
 
   // While the interstitial is showing, let's simulate the hidden page
   // attempting to show a JS message.
   IPC::Message* dummy_message = new IPC::Message;
   bool did_suppress_message = false;
+  const bool unload_handler_being_run = false;
   contents()->RunJavaScriptMessage(L"This is an informative message", L"OK",
-      kGURL, ui::MessageBoxFlags::kIsJavascriptAlert, dummy_message,
-      &did_suppress_message);
+      kGURL, ui::MessageBoxFlags::kIsJavascriptAlert, unload_handler_being_run,
+      dummy_message, &did_suppress_message);
   EXPECT_TRUE(did_suppress_message);
 }
 
 // Makes sure that if the source passed to CopyStateFromAndPrune has an
 // interstitial it isn't copied over to the destination.
 TEST_F(TabContentsTest, CopyStateFromAndPruneSourceInterstitial) {
   // Navigate to a page.
   GURL url1("http://www.google.com");
   rvh()->SendNavigate(1, url1);
   EXPECT_EQ(1, controller().entry_count());
@@ skipping 104 matching lines @@
   window.close_count = 0;
 
   const int kWindowCount = 4;
   for (int i = 0; i < kWindowCount; i++) {
     tab_contents->AddConstrainedDialog(&window);
   }
   EXPECT_EQ(window.close_count, 0);
   delete tab_contents;
   EXPECT_EQ(window.close_count, kWindowCount);
 }