base: Remove the string logging from CHECK().

chrome/browser/sync/test/integration/sync_test.cc

Index: chrome/browser/sync/test/integration/sync_test.cc
diff --git a/chrome/browser/sync/test/integration/sync_test.cc b/chrome/browser/sync/test/integration/sync_test.cc
index 0800d650c235317a0ff1c09cbc2eb4f784a56652..693949da0288fcdcc75083c6a5d2765f80cd183d 100644
--- a/chrome/browser/sync/test/integration/sync_test.cc
+++ b/chrome/browser/sync/test/integration/sync_test.cc
@@ -326,7 +326,8 @@ bool SyncTest::CreateGaiaAccount(const std::string& username,
   content::WebContents* contents =
       browser()->tab_strip_model()->GetActiveWebContents();
   content::NavigationEntry* entry = contents->GetController().GetVisibleEntry();
-  CHECK(entry) << "Could not get a hold on NavigationEntry post URL navigate.";
+  // Could not get a hold on NavigationEntry post URL navigate.
+  CHECK(entry);
   DVLOG(1) << "Create Gaia account request return code = "
       << entry->GetHttpStatusCode();
   return entry->GetHttpStatusCode() == 200;
@@ -493,8 +494,8 @@ bool SyncTest::SetupClients() {
   fake_server_invalidation_services_.resize(num_clients_);
 
   if (create_gaia_account_at_runtime_) {
-    CHECK(UsingExternalServers()) <<
-        "Cannot create Gaia accounts without external authentication servers";
+    // Cannot create Gaia accounts without external authentication servers
+    CHECK(UsingExternalServers());
     if (!CreateGaiaAccount(username_, password_))
       LOG(FATAL) << "Could not create Gaia account.";
   }