Move GeolocationClient to the Oilpan heap.

Source/modules/geolocation/testing/GeolocationClientMock.cpp

Index: Source/modules/geolocation/testing/GeolocationClientMock.cpp
diff --git a/Source/modules/geolocation/testing/GeolocationClientMock.cpp b/Source/modules/geolocation/testing/GeolocationClientMock.cpp
index 7c281b6ba601a6b00bda02ddc0120afdbff96cbe..d613d973a8fd63d64150e1bd9a432875541c7bbf 100644
--- a/Source/modules/geolocation/testing/GeolocationClientMock.cpp
+++ b/Source/modules/geolocation/testing/GeolocationClientMock.cpp
@@ -126,11 +126,6 @@ void GeolocationClientMock::permissionTimerFired(Timer<GeolocationClientMock>* t
     m_pendingPermissions.clear();
 }
 
-void GeolocationClientMock::geolocationDestroyed()
-{
-    ASSERT(!m_isActive);
-}
-
 void GeolocationClientMock::startUpdating()
 {
     ASSERT(!m_isActive);
@@ -184,4 +179,14 @@ void GeolocationClientMock::clearError()
     m_errorMessage = String();
 }
 
+void GeolocationClientMock::trace(Visitor* visitor)
+{
+#if ENABLE(OILPAN)
+    visitor->trace(m_controllers);
+#endif
+    visitor->trace(m_lastPosition);
+    visitor->trace(m_pendingPermissions);
+    GeolocationClient::trace(visitor);
+}
+
 } // namespace blink