Add logging in WidevineCdmComponentInstaller to help investigate a bug.

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 <stddef.h>
 #include <stdint.h>
 #include <string.h>
 #include <string>
@@ skipping 188 matching lines @@
   } else {
     DLOG(WARNING) << "Widevine CDM component manifest is missing codecs";
   }
   return codecs;
 }
 
 void RegisterWidevineCdmWithChrome(
     const base::Version& cdm_version,
     const base::FilePath& cdm_install_dir,
     std::unique_ptr<base::DictionaryValue> manifest) {
+  LOG(WARNING) << __FUNCTION__;
+
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   const std::string codecs = GetCodecs(*manifest);
 
   content::PepperPluginInfo plugin_info;
   if (!MakeWidevineCdmPluginInfo(cdm_version, cdm_install_dir, codecs,
                                  &plugin_info)) {
     return;
   }
 
   // true = Add to beginning of list to override any existing registrations.
@@ skipping 91 matching lines @@
     const base::FilePath& install_dir) const {
   return IsCompatibleWithChrome(manifest) &&
          base::PathExists(GetPlatformDirectory(install_dir)
                               .AppendASCII(kWidevineCdmFileName));
 }
 
 // The base directory on Windows looks like:
 // <profile>\AppData\Local\Google\Chrome\User Data\WidevineCdm\.
 base::FilePath WidevineCdmComponentInstallerTraits::GetRelativeInstallDir()
     const {
+  // Add LOG(WARNING) here and below to help investigate http://crbug.com/614745
+  // TODO(xhwang): Remove LOG(WARNING)s in this file after investigation.
+  LOG(WARNING) << __FUNCTION__;
   return base::FilePath(FILE_PATH_LITERAL("WidevineCdm"));
 }
 
 void WidevineCdmComponentInstallerTraits::GetHash(
     std::vector<uint8_t>* hash) const {
   hash->assign(kSha2Hash, kSha2Hash + arraysize(kSha2Hash));
 }
 
 std::string WidevineCdmComponentInstallerTraits::GetName() const {
   return kWidevineCdmDisplayName;
 }
 
 std::string WidevineCdmComponentInstallerTraits::GetAp() const {
   return std::string();
 }
 
 static bool HasValidAdapter(const base::FilePath& adapter_version_path,
                             const base::FilePath& adapter_install_path,
                             const std::string& chrome_version) {
   std::string adapter_version;
   return base::ReadFileToString(adapter_version_path, &adapter_version) &&
          adapter_version == chrome_version &&
          base::PathExists(adapter_install_path);
 }
 
 void WidevineCdmComponentInstallerTraits::UpdateCdmAdapter(
     const base::Version& cdm_version,
     const base::FilePath& cdm_install_dir,
     std::unique_ptr<base::DictionaryValue> manifest) {
+  LOG(WARNING) << __FUNCTION__;
+
   const base::FilePath adapter_version_path =
       GetPlatformDirectory(cdm_install_dir).AppendASCII(kCdmAdapterVersionName);
   const base::FilePath adapter_install_path =
       GetPlatformDirectory(cdm_install_dir)
           .AppendASCII(kWidevineCdmAdapterFileName);
 
   VLOG(1) << "UpdateCdmAdapter: version" << cdm_version.GetString()
           << " adapter_install_path=" << adapter_install_path.AsUTF8Unsafe()
           << " adapter_version_path=" << adapter_version_path.AsUTF8Unsafe();
 
@@ skipping 40 matching lines @@
   std::unique_ptr<ComponentInstallerTraits> traits(
       new WidevineCdmComponentInstallerTraits);
   // |cus| will take ownership of |installer| during installer->Register(cus).
   DefaultComponentInstaller* installer =
       new DefaultComponentInstaller(std::move(traits));
   installer->Register(cus, base::Closure());
 #endif  // defined(WIDEVINE_CDM_AVAILABLE) && defined(WIDEVINE_CDM_IS_COMPONENT)
 }
 
 }  // namespace component_updater