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

base/win/registry_unittest.cc

Index: base/win/registry_unittest.cc
diff --git a/base/win/registry_unittest.cc b/base/win/registry_unittest.cc
index 17377860539df6e35ae049be00e2d29d0409196a..1de696356467e0718a5fff603b7b46362c0e95c8 100644
--- a/base/win/registry_unittest.cc
+++ b/base/win/registry_unittest.cc
@@ -70,8 +70,8 @@ TEST_F(RegistryTest, ValueTest) {
     DWORD dword_value = 0;
     int64 int64_value = 0;
     ASSERT_EQ(ERROR_SUCCESS, key.ReadValue(kStringValueName, &string_value));
-    ASSERT_EQ(ERROR_SUCCESS, key.ReadValueDW(kDWORDValueName, &dword_value));
-    ASSERT_EQ(ERROR_SUCCESS, key.ReadInt64(kInt64ValueName, &int64_value));
+    ASSERT_EQ(ERROR_SUCCESS, key.ReadValue(kDWORDValueName, &dword_value));
+    ASSERT_EQ(ERROR_SUCCESS, key.ReadValue(kInt64ValueName, &int64_value));
     EXPECT_STREQ(kStringData, string_value.c_str());
     EXPECT_EQ(kDWORDData, dword_value);
     EXPECT_EQ(kInt64Data, int64_value);
@@ -79,8 +79,8 @@ TEST_F(RegistryTest, ValueTest) {
     // Make sure out args are not touched if ReadValue fails
     const wchar_t* kNonExistent = L"NonExistent";
     ASSERT_NE(ERROR_SUCCESS, key.ReadValue(kNonExistent, &string_value));
-    ASSERT_NE(ERROR_SUCCESS, key.ReadValueDW(kNonExistent, &dword_value));
-    ASSERT_NE(ERROR_SUCCESS, key.ReadInt64(kNonExistent, &int64_value));
+    ASSERT_NE(ERROR_SUCCESS, key.ReadValue(kNonExistent, &dword_value));
+    ASSERT_NE(ERROR_SUCCESS, key.ReadValue(kNonExistent, &int64_value));
     EXPECT_STREQ(kStringData, string_value.c_str());
     EXPECT_EQ(kDWORDData, dword_value);
     EXPECT_EQ(kInt64Data, int64_value);