Reduce console spam.

chrome/common/json_pref_store.cc

 // Copyright (c) 2010 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 "chrome/common/json_pref_store.h"
 
 #include <algorithm>
 
 #include "base/file_util.h"
 #include "base/values.h"
@@ skipping 66 matching lines @@
   if (path_.empty()) {
     read_only_ = true;
     return PREF_READ_ERROR_FILE_NOT_SPECIFIED;
   }
   JSONFileValueSerializer serializer(path_);
 
   int error_code = 0;
   std::string error_msg;
   scoped_ptr<Value> value(serializer.Deserialize(&error_code, &error_msg));
   if (!value.get()) {
-#if defined(GOOGLE_CHROME_BUILD)
-    // This log could be used for more detailed client-side error diagnosis,
-    // but since this triggers often with unit tests, we need to disable it
-    // in non-official builds.
-    PLOG(ERROR) << "Error reading Preferences: " << error_msg << " " <<
-        path_.value();
-#endif
     PrefReadError error;
     switch (error_code) {
       case JSONFileValueSerializer::JSON_ACCESS_DENIED:
         // If the file exists but is simply unreadable, put the file into a
         // state where we don't try to save changes.  Otherwise, we could
         // clobber the existing prefs.
         error = PREF_READ_ERROR_ACCESS_DENIED;
         read_only_ = true;
         break;
       case JSONFileValueSerializer::JSON_CANNOT_READ_FILE:
@@ skipping 63 matching lines @@
 }
 
 bool JsonPrefStore::SerializeData(std::string* output) {
   // TODO(tc): Do we want to prune webkit preferences that match the default
   // value?
   JSONStringValueSerializer serializer(output);
   serializer.set_pretty_print(true);
   scoped_ptr<DictionaryValue> copy(prefs_->DeepCopyWithoutEmptyChildren());
   return serializer.Serialize(*(copy.get()));
 }