+diff --git a/Source/JavaScriptCore/API/JSStringRef.cpp b/Source/JavaScriptCore/API/JSStringRef.cpp
+index 812f3d413..77a3fd0f4 100644
+--- a/Source/JavaScriptCore/API/JSStringRef.cpp
++++ b/Source/JavaScriptCore/API/JSStringRef.cpp
+@@ -37,7 +37,7 @@ using namespace WTF::Unicode;
+ JSStringRef JSStringCreateWithCharacters(const JSChar* chars, size_t numChars)
+ {
+     initializeThreading();
+-    return OpaqueJSString::create(chars, numChars).leakRef();
++    return OpaqueJSString::create(reinterpret_cast<const UChar*>(chars), numChars).leakRef();
+ }
+ 
+ JSStringRef JSStringCreateWithUTF8CString(const char* string)
+@@ -62,7 +62,7 @@ JSStringRef JSStringCreateWithUTF8CString(const char* string)
+ JSStringRef JSStringCreateWithCharactersNoCopy(const JSChar* chars, size_t numChars)
+ {
+     initializeThreading();
+-    return OpaqueJSString::create(StringImpl::createWithoutCopying(chars, numChars, WTF::DoesNotHaveTerminatingNullCharacter)).leakRef();
++    return OpaqueJSString::create(StringImpl::createWithoutCopying(reinterpret_cast<const UChar*>(chars), numChars, WTF::DoesNotHaveTerminatingNullCharacter)).leakRef();
+ }
+ 
+ JSStringRef JSStringRetain(JSStringRef string)
+@@ -83,7 +83,7 @@ size_t JSStringGetLength(JSStringRef string)
+ 
+ const JSChar* JSStringGetCharactersPtr(JSStringRef string)
+ {
+-    return string->characters();
++    return reinterpret_cast<const JSChar*>(string->characters());
+ }
+ 
+ size_t JSStringGetMaximumUTF8CStringSize(JSStringRef string)
+diff --git a/Source/JavaScriptCore/runtime/DateConversion.cpp b/Source/JavaScriptCore/runtime/DateConversion.cpp
+index 0b57f012d..05e27338b 100644
+--- a/Source/JavaScriptCore/runtime/DateConversion.cpp
++++ b/Source/JavaScriptCore/runtime/DateConversion.cpp
+@@ -107,7 +107,8 @@ String formatDateTime(const GregorianDateTime& t, DateTimeFormat format, bool as
+ #if OS(WINDOWS)
+             TIME_ZONE_INFORMATION timeZoneInformation;
+             GetTimeZoneInformation(&timeZoneInformation);
+-            const WCHAR* timeZoneName = t.isDST() ? timeZoneInformation.DaylightName : timeZoneInformation.StandardName;
++            const WCHAR* winTimeZoneName = t.isDST() ? timeZoneInformation.DaylightName : timeZoneInformation.StandardName;
++            String timeZoneName(reinterpret_cast<const UChar*>(winTimeZoneName));
+ #else
+             struct tm gtm = t;
+             char timeZoneName[70];
 diff --git a/Source/WTF/WTF.pri b/Source/WTF/WTF.pri
 index 1f4866d66..bb61e4ba3 100644
 --- a/Source/WTF/WTF.pri

     if (!gtkLibrary.load())
         return false;
     typedef void* (*gtk_init_ptr)(void*, void*);
diff --git a/Source/WebKit2/WebProcess/Plugins/Netscape/x11/NetscapePluginX11.cpp b/Source/WebKit2/WebProcess/Plugins/Netscape/x11/NetscapePluginX11.cpp
index d734ff684..0f6ff63d1 100644
--- a/Source/WebKit2/WebProcess/Plugins/Netscape/x11/NetscapePluginX11.cpp

 } else:!use?(wchar_unicode): {
     win32 {
         CONFIG(static, static|shared) {
diff --git a/Source/WTF/wtf/TypeTraits.h b/Source/WTF/wtf/TypeTraits.h
index 9df2c95cf..f5d6121fd 100644
--- a/Source/WTF/wtf/TypeTraits.h
+++ b/Source/WTF/wtf/TypeTraits.h
@@ -72,6 +72,9 @@ namespace WTF {
     template<> struct IsInteger<unsigned long>      { static const bool value = true; };
     template<> struct IsInteger<long long>          { static const bool value = true; };
     template<> struct IsInteger<unsigned long long> { static const bool value = true; };
+#if __cplusplus >= 201103L || defined(__GXX_EXPERIMENTAL_CXX0X__) || (defined(_HAS_CHAR16_T_LANGUAGE_SUPPORT) && _HAS_CHAR16_T_LANGUAGE_SUPPORT)
+    template<> struct IsInteger<char16_t>           { static const bool value = true; };
+#endif
 #if !COMPILER(MSVC) || defined(_NATIVE_WCHAR_T_DEFINED)
     template<> struct IsInteger<wchar_t>            { static const bool value = true; };
 #endif
diff --git a/Source/WebCore/plugins/qt/PluginPackageQt.cpp b/Source/WebCore/plugins/qt/PluginPackageQt.cpp
index a923d49aa..46772a4bb 100644
--- a/Source/WebCore/plugins/qt/PluginPackageQt.cpp
