[chrome/browser/component_updater] favor DCHECK_CURRENTLY_ON for better logs

chrome/browser/component_updater/widevine_cdm_component_installer.cc

 // Copyright (c) 2013 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/browser/component_updater/widevine_cdm_component_installer.h"
 
 #include <stdint.h>
 #include <string.h>
 #include <string>
 #include <vector>
@@ skipping 188 matching lines @@
         base::ASCIIToUTF16(kCdmSupportedCodecsParamName));
     additional_param_values->push_back(codecs);
   } else {
     DLOG(WARNING) << "Widevine CDM component manifest is missing codecs";
   }
 }
 
 void RegisterWidevineCdmWithChrome(const base::Version& cdm_version,
                                    const base::FilePath& adapter_install_path,
                                    scoped_ptr<base::DictionaryValue> manifest) {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+  DCHECK_CURRENTLY_ON(BrowserThread::UI);
   std::vector<base::string16> additional_param_names;
   std::vector<base::string16> additional_param_values;
   GetAdditionalParams(
       *manifest, &additional_param_names, &additional_param_values);
   content::PepperPluginInfo plugin_info;
   if (!MakeWidevineCdmPluginInfo(cdm_version,
                                  adapter_install_path,
                                  additional_param_names,
                                  additional_param_values,
                                  &plugin_info)) {
@@ skipping 152 matching lines @@
   scoped_ptr<ComponentInstallerTraits> traits(
       new WidevineCdmComponentInstallerTraits);
   // |cus| will take ownership of |installer| during installer->Register(cus).
   DefaultComponentInstaller* installer =
       new DefaultComponentInstaller(traits.Pass());
   installer->Register(cus, base::Closure());
 #endif  // defined(WIDEVINE_CDM_AVAILABLE) && defined(WIDEVINE_CDM_IS_COMPONENT)
 }
 
 }  // namespace component_updater