Convert chrome/common non-debug logs to debug logs.

chrome/common/extensions/extension_unpacker.cc

 // Copyright (c) 2011 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/extensions/extension_unpacker.h"
 
 #include <set>
 
 #include "base/file_util.h"
 #include "base/json/json_value_serializer.h"
@@ skipping 126 matching lines @@
       locale_path.Append(Extension::kMessagesFilename);
 
     if (!ReadMessageCatalog(messages_path))
       return false;
   }
 
   return true;
 }
 
 bool ExtensionUnpacker::Run() {
-  VLOG(1) << "Installing extension " << extension_path_.value();
+  DVLOG(1) << "Installing extension " << extension_path_.value();
 
   // <profile>/Extensions/INSTALL_TEMP/<version>
   temp_install_dir_ =
     extension_path_.DirName().AppendASCII(filenames::kTempExtensionName);
 
   if (!file_util::CreateDirectory(temp_install_dir_)) {
 #if defined(OS_WIN)
     std::string dir_string = WideToUTF8(temp_install_dir_.value());
 #else
     std::string dir_string = temp_install_dir_.value();
@@ skipping 158 matching lines @@
     return false;
   }
   parsed_catalogs_->Set(dir_name, root.release());
 
   return true;
 }
 
 void ExtensionUnpacker::SetError(const std::string &error) {
   error_message_ = error;
 }