Remove BLINK_ASSERT() and BLINK_ASSERT_NOT_REACHED() macros.

third_party/WebKit/public/web/WebFrameClient.h

 /*
  * Copyright (C) 2011, 2012 Google Inc. All rights reserved.
  *
  * 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
@@ skipping 703 matching lines @@
     virtual WebBluetooth* bluetooth() { return 0; }
 
     // WebUSB --------------------------------------------------------------
     virtual WebUSBClient* usbClient() { return nullptr; }
 
 
     // Audio Output Devices API --------------------------------------------
 
     // Checks that the given audio sink exists and is authorized. The result is provided via the callbacks.
     // This method takes ownership of the callbacks pointer.
-    virtual void checkIfAudioSinkExistsAndIsAuthorized(const WebString& sinkId, const WebSecurityOrigin&, WebSetSinkIdCallbacks*) { BLINK_ASSERT_NOT_REACHED(); }
+    virtual void checkIfAudioSinkExistsAndIsAuthorized(const WebString& sinkId, const WebSecurityOrigin&, WebSetSinkIdCallbacks* callbacks)
+    {
+        if (callbacks) {
+            callbacks->onError(WebSetSinkIdError::NotSupported);
+            delete callbacks;
+        }
+    }
 
 protected:
     virtual ~WebFrameClient() { }
 };
 
 } // namespace blink
 
 #endif