Use nullptr_t for RefPtr, PassRefPtr and RawPtr.

Source/bindings/v8/custom/V8GeolocationCustom.cpp

 /*
  * Copyright 2009, The Android Open Source Project
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *  * Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  *  * Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 43 matching lines @@
     // Given the above test, this will always yield an object.
     v8::Local<v8::Object> object = value->ToObject();
 
     // For all three properties, we apply the following ...
     // - If the getter or the property's valueOf method throws an exception, we
     //   quit so as not to risk overwriting the exception.
     // - If the value is absent or undefined, we don't override the default.
     v8::Local<v8::Value> enableHighAccuracyValue = object->Get(v8AtomicString(isolate, "enableHighAccuracy"));
     if (enableHighAccuracyValue.IsEmpty()) {
         succeeded = false;
-        return 0;
+        return nullptr;
     }
     if (!enableHighAccuracyValue->IsUndefined()) {
         v8::Local<v8::Boolean> enableHighAccuracyBoolean = enableHighAccuracyValue->ToBoolean();
         if (enableHighAccuracyBoolean.IsEmpty()) {
             succeeded = false;
-            return 0;
+            return nullptr;
         }
         options->setEnableHighAccuracy(enableHighAccuracyBoolean->Value());
     }
 
     v8::Local<v8::Value> timeoutValue = object->Get(v8AtomicString(isolate, "timeout"));
     if (timeoutValue.IsEmpty()) {
         succeeded = false;
-        return 0;
+        return nullptr;
     }
     if (!timeoutValue->IsUndefined()) {
         v8::Local<v8::Number> timeoutNumber = timeoutValue->ToNumber();
         if (timeoutNumber.IsEmpty()) {
             succeeded = false;
-            return 0;
+            return nullptr;
         }
         double timeoutDouble = timeoutNumber->Value();
         // If the value is positive infinity, there's nothing to do.
         if (!(std::isinf(timeoutDouble) && timeoutDouble > 0)) {
             v8::Local<v8::Int32> timeoutInt32 = timeoutValue->ToInt32();
             if (timeoutInt32.IsEmpty()) {
                 succeeded = false;
-                return 0;
+                return nullptr;
             }
             // Wrap to int32 and force non-negative to match behavior of window.setTimeout.
             options->setTimeout(max(0, timeoutInt32->Value()));
         }
     }
 
     v8::Local<v8::Value> maximumAgeValue = object->Get(v8AtomicString(isolate, "maximumAge"));
     if (maximumAgeValue.IsEmpty()) {
         succeeded = false;
-        return 0;
+        return nullptr;
     }
     if (!maximumAgeValue->IsUndefined()) {
         v8::Local<v8::Number> maximumAgeNumber = maximumAgeValue->ToNumber();
         if (maximumAgeNumber.IsEmpty()) {
             succeeded = false;
-            return 0;
+            return nullptr;
         }
         double maximumAgeDouble = maximumAgeNumber->Value();
         if (std::isinf(maximumAgeDouble) && maximumAgeDouble > 0) {
             // If the value is positive infinity, clear maximumAge.
             options->clearMaximumAge();
         } else {
             v8::Local<v8::Int32> maximumAgeInt32 = maximumAgeValue->ToInt32();
             if (maximumAgeInt32.IsEmpty()) {
                 succeeded = false;
-                return 0;
+                return nullptr;
             }
             // Wrap to int32 and force non-negative to match behavior of window.setTimeout.
             options->setMaximumAge(max(0, maximumAgeInt32->Value()));
         }
     }
 
     return options.release();
 }
 
 void V8Geolocation::getCurrentPositionMethodCustom(const v8::FunctionCallbackInfo<v8::Value>& info)
@@ skipping 41 matching lines @@
     if (!succeeded)
         return;
     ASSERT(positionOptions);
 
     Geolocation* geolocation = V8Geolocation::toNative(info.Holder());
     int watchId = geolocation->watchPosition(positionCallback.release(), positionErrorCallback.release(), positionOptions.release());
     v8SetReturnValue(info, watchId);
 }
 
 } // namespace WebCore