Factor out ShouldIgnoreNavigation and add tests for the function

chrome/browser/chromeos/arc/intent_helper/arc_external_protocol_dialog_unittest.cc

 // 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.
 
 #include "chrome/browser/chromeos/arc/intent_helper/arc_external_protocol_dialog.h"
 
 #include "testing/gtest/include/gtest/gtest.h"
 #include "url/gurl.h"
 
 namespace arc {
@@ skipping 413 matching lines @@
   std::pair<GURL, std::string> url_and_package;
   // GetAction shouldn't return OPEN_URL_IN_CHROME because Chrome doesn't
   // directly support geo:.
   EXPECT_EQ(GetActionResult::HANDLE_URL_IN_ARC,
             GetActionForTesting(intent_url_with_fallback, handlers,
                                 no_selection, &url_and_package));
   EXPECT_EQ(geo_url, url_and_package.first);
   EXPECT_EQ(kChromePackageName, url_and_package.second);
 }
 
+// Test that ShouldIgnoreNavigation accepts CLIENT_REDIRECT qualifier but does
+// not other ones.
+TEST(ArcExternalProtocolDialogTest, TestShouldIgnoreNavigation) {
+  EXPECT_FALSE(ShouldIgnoreNavigationForTesting(
+      ui::PageTransitionFromInt(ui::PAGE_TRANSITION_LINK)));
+  EXPECT_FALSE(ShouldIgnoreNavigationForTesting(ui::PageTransitionFromInt(
+      ui::PAGE_TRANSITION_LINK | ui::PAGE_TRANSITION_CLIENT_REDIRECT)));
+  EXPECT_TRUE(ShouldIgnoreNavigationForTesting(ui::PageTransitionFromInt(
+      ui::PAGE_TRANSITION_LINK | ui::PAGE_TRANSITION_CLIENT_REDIRECT |
+      ui::PAGE_TRANSITION_HOME_PAGE)));
+  EXPECT_TRUE(ShouldIgnoreNavigationForTesting(ui::PageTransitionFromInt(
+      ui::PAGE_TRANSITION_LINK | ui::PAGE_TRANSITION_HOME_PAGE)));
+}
+
 }  // namespace arc