base: Remove the string logging from CHECK().

components/dom_distiller/standalone/content_extractor_browsertest.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 <stddef.h>
 #include <sstream>
 #include <utility>
 
 #include "base/command_line.h"
 #include "base/files/scoped_temp_dir.h"
@@ skipping 289 matching lines @@
     return requests;
   }
 
  private:
   ContentExtractionRequest(const GURL& url) : url_(url) {}
 
   void OnArticleUpdated(ArticleDistillationUpdate article_update) override {}
 
   void OnArticleReady(const DistilledArticleProto* article_proto) override {
     article_proto_ = article_proto;
-    CHECK(article_proto->pages_size()) << "Failed extracting " << url_;
+    // Failed extracting |url_|.
+    CHECK(article_proto->pages_size());
     base::ThreadTaskRunnerHandle::Get()->PostTask(FROM_HERE,
                                                   finished_callback_);
   }
 
   const DistilledArticleProto* article_proto_;
   std::unique_ptr<ViewerHandle> viewer_handle_;
   GURL url_;
   base::Closure finished_callback_;
 };
 
@@ skipping 117 matching lines @@
       protobuf_output_stream_;
 };
 
 IN_PROC_BROWSER_TEST_F(ContentExtractor, MANUAL_ExtractUrl) {
   SetDistillerJavaScriptWorldId(content::ISOLATED_WORLD_ID_CONTENT_END);
   Start();
   base::RunLoop().Run();
 }
 
 }  // namespace dom_distiller