Revert of Remove DCHECK_IMPLIES/CHECK_IMPLIES.

chrome/browser/captive_portal/captive_portal_tab_helper_unittest.cc

Index: chrome/browser/captive_portal/captive_portal_tab_helper_unittest.cc
diff --git a/chrome/browser/captive_portal/captive_portal_tab_helper_unittest.cc b/chrome/browser/captive_portal/captive_portal_tab_helper_unittest.cc
index e9e63896186e2b2f44b66f66b6571ed14a76d9e4..96cd8b2197e5d8a2b3f5e1b020c291bd538e5670 100644
--- a/chrome/browser/captive_portal/captive_portal_tab_helper_unittest.cc
+++ b/chrome/browser/captive_portal/captive_portal_tab_helper_unittest.cc
@@ -127,7 +127,7 @@
     content::WebContentsTester* web_contents_tester =
         content::WebContentsTester::For(web_contents());
     web_contents_tester->StartNavigation(url);
-    DCHECK(navigation_type != kSameProcess || !pending_main_rfh());
+    DCHECK_IMPLIES(navigation_type == kSameProcess, !pending_main_rfh());
 
     EXPECT_CALL(mock_reloader(), OnAbort()).Times(1);
     content::RenderFrameHost* rfh =
@@ -156,7 +156,7 @@
     content::WebContentsTester* web_contents_tester =
         content::WebContentsTester::For(web_contents());
     web_contents_tester->StartNavigation(url);
-    DCHECK(navigation_type != kSameProcess || !pending_main_rfh());
+    DCHECK_IMPLIES(navigation_type == kSameProcess, !pending_main_rfh());
 
     EXPECT_CALL(mock_reloader(), OnAbort()).Times(1);
     content::RenderFrameHost* rfh =