Revert of Adding the ability to change ICE servers through SetConfiguration.

talk/app/webrtc/fakeportallocatorfactory.h

Index: talk/app/webrtc/fakeportallocatorfactory.h
diff --git a/talk/app/webrtc/fakeportallocatorfactory.h b/talk/app/webrtc/fakeportallocatorfactory.h
index eb73b76d08d6e41df04e4624fa1a284c97ff52a3..f326b6204383a16103e3f62e82e2350bfae26598 100644
--- a/talk/app/webrtc/fakeportallocatorfactory.h
+++ b/talk/app/webrtc/fakeportallocatorfactory.h
@@ -49,9 +49,7 @@
       const std::vector<TurnConfiguration>& turn_configurations) {
     stun_configs_ = stun_configurations;
     turn_configs_ = turn_configurations;
-    last_created_allocator_ =
-        new cricket::FakePortAllocator(rtc::Thread::Current(), nullptr);
-    return last_created_allocator_;
+    return new cricket::FakePortAllocator(rtc::Thread::Current(), NULL);
   }
 
   const std::vector<StunConfiguration>& stun_configs() const {
@@ -64,12 +62,6 @@
 
   void SetNetworkIgnoreMask(int network_ignore_mask) {}
 
-  // Up to caller to ensure this isn't called after the allocator has been
-  // destroyed.
-  cricket::FakePortAllocator* last_created_allocator() {
-    return last_created_allocator_;
-  }
-
  protected:
   FakePortAllocatorFactory() {}
   ~FakePortAllocatorFactory() {}
@@ -77,7 +69,6 @@
  private:
   std::vector<PortAllocatorFactoryInterface::StunConfiguration> stun_configs_;
   std::vector<PortAllocatorFactoryInterface::TurnConfiguration> turn_configs_;
-  cricket::FakePortAllocator* last_created_allocator_ = nullptr;
 };
 
 }  // namespace webrtc