Add toStdString methods to CString and WTF::String

third_party/WebKit/Source/wtf/text/WTFStringTest.cpp

 /*
  * Copyright (C) 2012 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 329 matching lines @@
 }
 
 TEST(StringTest, Lower)
 {
     EXPECT_STREQ("link", String("LINK").lower().ascii().data());
     EXPECT_STREQ("link", String("lInk").lower().ascii().data());
     EXPECT_STREQ("lin\xE1k", String("lIn\xC1k").lower().latin1().data());
     EXPECT_STREQ("link", String::fromUTF8("LIN\xE2\x84\xAA").lower().utf8().data());
 }
 
+TEST(StringTest, ToStdString)
+{
+    char kAsciiChars[] = "1234";
+    EXPECT_EQ(std::string(kAsciiChars), String(kAsciiChars).toUTF8());
+
+    UChar kUTF16Chars[] = {0x20AC, 0xD801, 0};
+    EXPECT_EQ(std::string("\xE2\x82\xAC\xED\xA0\x81"), String(kUTF16Chars).toUTF8());
+
+}
+
 } // namespace WTF