Replace wstring with string16 in sandbox

sandbox/win/src/window.cc

Index: sandbox/win/src/window.cc
diff --git a/sandbox/win/src/window.cc b/sandbox/win/src/window.cc
index d8de967272661360a9309ee6bf571c4bfed4b47d..d21858a42a4a2cb24ecc0becbca41e22a992cf79 100644
--- a/sandbox/win/src/window.cc
+++ b/sandbox/win/src/window.cc
@@ -53,7 +53,7 @@ ResultCode CreateAltWindowStation(HWINSTA* winsta) {
 }
 
 ResultCode CreateAltDesktop(HWINSTA winsta, HDESK* desktop) {
-  std::wstring desktop_name = L"sbox_alternate_desktop_";
+  base::string16 desktop_name = L"sbox_alternate_desktop_";
 
   // Append the current PID to the desktop name.
   wchar_t buffer[16];
@@ -100,14 +100,14 @@ ResultCode CreateAltDesktop(HWINSTA winsta, HDESK* desktop) {
   return SBOX_ERROR_CANNOT_CREATE_DESKTOP;
 }
 
-std::wstring GetWindowObjectName(HANDLE handle) {
+base::string16 GetWindowObjectName(HANDLE handle) {
   // Get the size of the name.
   DWORD size = 0;
   ::GetUserObjectInformation(handle, UOI_NAME, NULL, 0, &size);
 
   if (!size) {
     NOTREACHED();
-    return std::wstring();
+    return base::string16();
   }
 
   // Create the buffer that will hold the name.
@@ -117,19 +117,19 @@ std::wstring GetWindowObjectName(HANDLE handle) {
   if (!::GetUserObjectInformation(handle, UOI_NAME, name_buffer.get(), size,
                                   &size)) {
     NOTREACHED();
-    return std::wstring();
+    return base::string16();
   }
 
-  return std::wstring(name_buffer.get());
+  return base::string16(name_buffer.get());
 }
 
-std::wstring GetFullDesktopName(HWINSTA winsta, HDESK desktop) {
+base::string16 GetFullDesktopName(HWINSTA winsta, HDESK desktop) {
   if (!desktop) {
     NOTREACHED();
-    return std::wstring();
+    return base::string16();
   }
 
-  std::wstring name;
+  base::string16 name;
   if (winsta) {
     name = GetWindowObjectName(winsta);
     name += L'\\';