base/win: Add documentation to RegKey::Read/Write functions.

chrome/app/client_util.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 <windows.h>
 #include <shlwapi.h>
 
 #include "base/command_line.h"
 #include "base/debug/trace_event.h"
 #include "base/environment.h"
@@ skipping 179 matching lines @@
     DWORD pre_read_size = 0;
     DWORD pre_read_step_size = kStepSize;
     DWORD pre_read = 1;
 
     // TODO(chrisha): This path should not be ChromeFrame specific, and it
     //     should not be hard-coded with 'Google' in the path. Rather, it should
     //     use the product name.
     base::win::RegKey key(HKEY_CURRENT_USER, L"Software\\Google\\ChromeFrame",
                           KEY_QUERY_VALUE);
     if (key.Valid()) {
-      key.ReadValueDW(L"PreReadSize", &pre_read_size);
-      key.ReadValueDW(L"PreReadStepSize", &pre_read_step_size);
-      key.ReadValueDW(L"PreRead", &pre_read);
+      key.ReadValue(L"PreReadSize", &pre_read_size);
+      key.ReadValue(L"PreReadStepSize", &pre_read_step_size);
+      key.ReadValue(L"PreRead", &pre_read);
       key.Close();
     }
 
 #if defined(OS_WIN)
 #if defined(GOOGLE_CHROME_BUILD)
     // The PreRead experiment is unable to use the standard FieldTrial
     // mechanism as pre-reading happens in chrome.exe prior to loading
     // chrome.dll. As such, we use a custom approach. If the experiment is
     // running (not expired, and we're running a version of chrome from an
     // appropriate channel) then we look to the registry for the BreakPad/UMA
@@ skipping 183 matching lines @@
   }
 };
 
 MainDllLoader* MakeMainDllLoader() {
 #if defined(GOOGLE_CHROME_BUILD)
   return new ChromeDllLoader();
 #else
   return new ChromiumDllLoader();
 #endif
 }