Fix a type mismatch on Windows caused by r201738.

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 <string.h>
 
 #include <vector>
 
@@ skipping 199 matching lines @@
 
 bool WidevineCdmComponentInstaller::Install(
     const base::DictionaryValue& manifest,
     const base::FilePath& unpack_path) {
   base::Version version;
   if (!CheckWidevineCdmManifest(manifest, &version))
     return false;
   if (current_version_.CompareTo(version) > 0)
     return false;
 
-  if (!file_util::PathExists(unpack_path.Append(kWidevineCdmFileName)))
+  if (!file_util::PathExists(unpack_path.AppendASCII(kWidevineCdmFileName)))
     return false;
 
   base::FilePath adapter_source_path;
   PathService::Get(chrome::FILE_WIDEVINE_CDM_ADAPTER, &adapter_source_path);
   if (!file_util::PathExists(adapter_source_path))
     return false;
 
   // Passed the basic tests. Time to install it.
   base::FilePath install_path =
       GetWidevineCdmBaseDirectory().AppendASCII(version.GetString());
   if (file_util::PathExists(install_path))
     return false;
   if (!file_util::Move(unpack_path, install_path))
     return false;
 
   base::FilePath adapter_install_path =
-      install_path.Append(kWidevineCdmAdapterFileName);
+      install_path.AppendASCII(kWidevineCdmAdapterFileName);
   if (!file_util::CopyFile(adapter_source_path, adapter_install_path))
     return false;
 
   // Installation is done. Now register the Widevine CDM with chrome.
   current_version_ = version;
   BrowserThread::PostTask(BrowserThread::UI, FROM_HERE, base::Bind(
       &RegisterWidevineCdmWithChrome, adapter_install_path, version));
   return true;
 }
 
@@ skipping 15 matching lines @@
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE));
   base::FilePath path = GetWidevineCdmBaseDirectory();
   if (!file_util::PathExists(path) && !file_util::CreateDirectory(path)) {
     NOTREACHED() << "Could not create Widevine CDM directory.";
     return;
   }
 
   base::Version version(kNullVersion);
   std::vector<base::FilePath> older_dirs;
   if (GetWidevineCdmDirectory(&path, &version, &older_dirs)) {
-    if (file_util::PathExists(path.Append(kWidevineCdmAdapterFileName)) &&
-        file_util::PathExists(path.Append(kWidevineCdmFileName))) {
+    if (file_util::PathExists(path.AppendASCII(kWidevineCdmAdapterFileName)) &&
+        file_util::PathExists(path.AppendASCII(kWidevineCdmFileName))) {
       BrowserThread::PostTask(
           BrowserThread::UI, FROM_HERE,
           base::Bind(&RegisterWidevineCdmWithChrome, path, version));
     } else {
       file_util::Delete(path, true);
       version = base::Version(kNullVersion);
     }
   }
 
   BrowserThread::PostTask(
@@ skipping 10 matching lines @@
 #endif  // defined(WIDEVINE_CDM_AVAILABLE) && defined(WIDEVINE_CDM_IS_COMPONENT)
 
 }  // namespace
 
 void RegisterWidevineCdmComponent(ComponentUpdateService* cus) {
 #if defined(WIDEVINE_CDM_AVAILABLE) && defined(WIDEVINE_CDM_IS_COMPONENT)
   BrowserThread::PostTask(BrowserThread::FILE, FROM_HERE,
                           base::Bind(&StartWidevineCdmUpdateRegistration, cus));
 #endif  // defined(WIDEVINE_CDM_AVAILABLE) && defined(WIDEVINE_CDM_IS_COMPONENT)
 }