Pass Manifest JSON paser error line and column number to console.

content/renderer/manifest/manifest_parser_unittest.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 "content/renderer/manifest/manifest_parser.h"
 
 #include <stdint.h>
 
 #include "base/macros.h"
 #include "base/strings/string_util.h"
@@ skipping 13 matching lines @@
 class ManifestParserTest : public testing::Test  {
  protected:
   ManifestParserTest() {}
   ~ManifestParserTest() override {}
 
   Manifest ParseManifestWithURLs(const base::StringPiece& data,
                                  const GURL& document_url,
                                  const GURL& manifest_url) {
     ManifestParser parser(data, document_url, manifest_url);
     parser.Parse();
-    errors_ = parser.errors();
+    errors_.clear();
+    for (const scoped_ptr<ManifestParser::ErrorInfo>& error_info :
+         parser.errors()) {
+      errors_.push_back(error_info->error_msg);
+    }
     return parser.manifest();
   }
 
   Manifest ParseManifest(const base::StringPiece& data) {
     return ParseManifestWithURLs(
         data, default_document_url, default_manifest_url);
   }
 
   const std::vector<std::string>& errors() const {
     return errors_;
@@ skipping 1324 matching lines @@
     Manifest manifest = ParseManifest("{ \"gcm_sender_id\": 42 }");
     EXPECT_TRUE(manifest.gcm_sender_id.is_null());
     EXPECT_EQ(1u, GetErrorCount());
     EXPECT_EQ("Manifest parsing error: property 'gcm_sender_id' ignored,"
               " type string expected.",
               errors()[0]);
   }
 }
 
 } // namespace content