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

chrome_frame/test/util_unittests.cc

Index: chrome_frame/test/util_unittests.cc
diff --git a/chrome_frame/test/util_unittests.cc b/chrome_frame/test/util_unittests.cc
index 572ef13c75538e550098c6a817abc60cc15b6990..41d4c009bf0682bae48766eb13be4f67d91f5d9a 100644
--- a/chrome_frame/test/util_unittests.cc
+++ b/chrome_frame/test/util_unittests.cc
@@ -419,7 +419,7 @@ TEST_F(UtilTests, IsDefaultRendererTest) {
   EXPECT_TRUE(config_key.Valid());
 
   DWORD saved_default_renderer = 0;  // NOLINT
-  config_key.ReadValueDW(kEnableGCFRendererByDefault, &saved_default_renderer);
+  config_key.ReadValue(kEnableGCFRendererByDefault, &saved_default_renderer);
 
   config_key.DeleteValue(kEnableGCFRendererByDefault);
   EXPECT_FALSE(IsGcfDefaultRenderer());
@@ -450,7 +450,7 @@ TEST_F(UtilTests, RendererTypeForUrlTest) {
 
   // Save the current state of the registry.
   DWORD saved_default_renderer = 0;
-  config_key.ReadValueDW(kEnableGCFRendererByDefault, &saved_default_renderer);
+  config_key.ReadValue(kEnableGCFRendererByDefault, &saved_default_renderer);
 
   // Make sure the host is the default renderer.
   config_key.WriteValue(kEnableGCFRendererByDefault, static_cast<DWORD>(0));