Update some uses of char16 to use the base:: namespace.

components/webdata/encryptor/encryptor_unittest.cc

Index: components/webdata/encryptor/encryptor_unittest.cc
diff --git a/components/webdata/encryptor/encryptor_unittest.cc b/components/webdata/encryptor/encryptor_unittest.cc
index b48792a920cc0df2b298bddf29bdbb1188bb27ae..3084ab838ccf014e9373961582c2d073b9ab4bfb 100644
--- a/components/webdata/encryptor/encryptor_unittest.cc
+++ b/components/webdata/encryptor/encryptor_unittest.cc
@@ -52,12 +52,12 @@ TEST_F(EncryptorTest, String16EncryptionDecryption) {
   EXPECT_EQ(plaintext, result);
 
   // Test Unicode.
-  char16 wchars[] = { 0xdbeb, 0xdf1b, 0x4e03, 0x6708, 0x8849,
-                      0x661f, 0x671f, 0x56db, 0x597c, 0x4e03,
-                      0x6708, 0x56db, 0x6708, 0xe407, 0xdbaf,
-                      0xdeb5, 0x4ec5, 0x544b, 0x661f, 0x671f,
-                      0x65e5, 0x661f, 0x671f, 0x4e94, 0xd8b1,
-                      0xdce1, 0x7052, 0x5095, 0x7c0b, 0xe586, 0};
+  base::char16 wchars[] = { 0xdbeb, 0xdf1b, 0x4e03, 0x6708, 0x8849,
+                            0x661f, 0x671f, 0x56db, 0x597c, 0x4e03,
+                            0x6708, 0x56db, 0x6708, 0xe407, 0xdbaf,
+                            0xdeb5, 0x4ec5, 0x544b, 0x661f, 0x671f,
+                            0x65e5, 0x661f, 0x671f, 0x4e94, 0xd8b1,
+                            0xdce1, 0x7052, 0x5095, 0x7c0b, 0xe586, 0};
   plaintext = wchars;
   utf8_plaintext = base::UTF16ToUTF8(plaintext);
   EXPECT_EQ(plaintext, base::UTF8ToUTF16(utf8_plaintext));