Expand net::CookieStore::ChangeCause::EXPLICIT for debugging.

components/signin/core/browser/gaia_cookie_manager_service.cc

 // Copyright 2014 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 "components/signin/core/browser/gaia_cookie_manager_service.h"
 
 #include <stddef.h>
 
 #include <queue>
 
@@ skipping 488 matching lines @@
   // that any changes to the gaia cookie outside of this class, while requests
   // are pending, will be lost.  However, trying to process these changes could
   // cause an endless loop (see crbug.com/516070).
   if (requests_.empty()) {
     // Build gaia "source" based on cause to help track down channel id issues.
     std::string source(GetDefaultSourceForRequest());
     switch (cause) {
       case net::CookieStore::ChangeCause::INSERTED:
         source += "INSERTED";
         break;
-      case net::CookieStore::ChangeCause::EXPLICIT:
-        source += "EXPLICIT";
+      case net::CookieStore::ChangeCause::EXPLICIT1:
+        source += "EXPLICIT1";
+        break;
+      case net::CookieStore::ChangeCause::EXPLICIT2:
+        source += "EXPLICIT2";
+        break;
+      case net::CookieStore::ChangeCause::EXPLICIT3:
+        source += "EXPLICIT3";
+        break;
+      case net::CookieStore::ChangeCause::EXPLICIT4:
+        source += "EXPLICIT4";
         break;
       case net::CookieStore::ChangeCause::UNKNOWN_DELETION:
         source += "UNKNOWN_DELETION";
         break;
       case net::CookieStore::ChangeCause::OVERWRITE:
         source += "OVERWRITE";
         break;
       case net::CookieStore::ChangeCause::EXPIRED:
         source += "EXPIRED";
         break;
@@ skipping 273 matching lines @@
         break;
       case GaiaCookieRequestType::LIST_ACCOUNTS:
         uber_token_fetcher_.reset();
         signin_client_->DelayNetworkCall(
             base::Bind(&GaiaCookieManagerService::StartFetchingListAccounts,
                        base::Unretained(this)));
         break;
     }
   }
 }