Fully deprecate core.js. Moved last method to error.js.

ios/web/web_state/js/common_js_unittest.mm

 // Copyright 2015 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>
 #import <Foundation/Foundation.h>
 
 #include "base/macros.h"
 #include "base/strings/sys_string_conversions.h"
 #import "ios/web/public/test/web_test_with_web_state.h"
@@ skipping 111 matching lines @@
         "temp.toJSON = 42;"
         "__gCrWeb.stringify(temp)",
        @"[1,2]"},
       // Stringify an undefined object.
       {@"__gCrWeb.stringify(undefined)", @"undefined"},
   };
 
   for (size_t i = 0; i < arraysize(test_data); i++) {
     TestScriptAndExpectedValue& data = test_data[i];
     // Load a sample HTML page. As a side-effect, loading HTML via
-    // |webController_| will also inject core.js.
+    // |webController_| will also inject web_bundle.js.
     LoadHtml(@"<p>");
     id result = ExecuteJavaScript(data.test_script);
     EXPECT_NSEQ(data.expected_value, result)
         << " in test " << i << ": "
         << base::SysNSStringToUTF8(data.test_script);
   }
 }
 
 }  // namespace web