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

net/http/http_auth_handler_ntlm_portable.cc

Index: net/http/http_auth_handler_ntlm_portable.cc
diff --git a/net/http/http_auth_handler_ntlm_portable.cc b/net/http/http_auth_handler_ntlm_portable.cc
index 9faa85fde199e451781fbd6233abd5ff861287c4..138e2881093bbc0fd33c454fa1badba48c00f0ac 100644
--- a/net/http/http_auth_handler_ntlm_portable.cc
+++ b/net/http/http_auth_handler_ntlm_portable.cc
@@ -211,7 +211,8 @@ static void* WriteSecBuf(void* buf, uint16 length, uint32 offset) {
  * to pass the same buffer as both input and output, which is a handy way to
  * convert the unicode buffer to little-endian on big-endian platforms.
  */
-static void* WriteUnicodeLE(void* buf, const char16* str, uint32 str_len) {
+static void* WriteUnicodeLE(
+    void* buf, const base::char16* str, uint32 str_len) {
   // Convert input string from BE to LE.
   uint8* cursor = static_cast<uint8*>(buf);
   const uint8* input  = reinterpret_cast<const uint8*>(str);
@@ -480,7 +481,8 @@ static int GenerateType3Msg(const base::string16& domain,
     ucs_domain_buf = domain;
     domain_ptr = ucs_domain_buf.data();
     domain_len = ucs_domain_buf.length() * 2;
-    WriteUnicodeLE(const_cast<void*>(domain_ptr), (const char16*) domain_ptr,
+    WriteUnicodeLE(const_cast<void*>(domain_ptr),
+                   (const base::char16*) domain_ptr,
                    ucs_domain_buf.length());
 #else
     domain_ptr = domain.data();
@@ -500,7 +502,7 @@ static int GenerateType3Msg(const base::string16& domain,
     ucs_user_buf = username;
     user_ptr = ucs_user_buf.data();
     user_len = ucs_user_buf.length() * 2;
-    WriteUnicodeLE(const_cast<void*>(user_ptr), (const char16*) user_ptr,
+    WriteUnicodeLE(const_cast<void*>(user_ptr), (const base::char16*) user_ptr,
                    ucs_user_buf.length());
 #else
     user_ptr = username.data();
@@ -521,7 +523,7 @@ static int GenerateType3Msg(const base::string16& domain,
     host_ptr = ucs_host_buf.data();
     host_len = ucs_host_buf.length() * 2;
 #ifdef IS_BIG_ENDIAN
-    WriteUnicodeLE(const_cast<void*>(host_ptr), (const char16*) host_ptr,
+    WriteUnicodeLE(const_cast<void*>(host_ptr), (const base::char16*) host_ptr,
                    ucs_host_buf.length());
 #endif
   } else {