Expose a method to access amount of memory used by the current process....

webkit/api/public/WebKitClient.h

 /*
  * Copyright (C) 2009 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 144 matching lines @@
 
         // Handle the <keygen> tag for generating client certificates
         // Returns a base64 encoded signed copy of a public key from a newly
         // generated key pair and the supplied challenge string. keySizeindex
         // specifies the strength of the key.
         virtual WebString signedPublicKeyAndChallengeString(unsigned keySizeIndex,
                                                             const WebKit::WebString& challenge,
                                                             const WebKit::WebURL& url) = 0;
 
 
+
+        // Memory --------------------------------------------------------------
+
+        // Returns the current space allocated for the pagefile, in MB.
+        // That is committed size for Windows and virtual memory size for POSIX
+        virtual size_t memoryUsageMB() = 0;
+
+
         // Message Ports -------------------------------------------------------
 
         // Creates a Message Port Channel.  This can be called on any thread.
         // The returned object should only be used on the thread it was created on.
         virtual WebMessagePortChannel* createMessagePortChannel() = 0;
 
 
         // Network -------------------------------------------------------------
 
         virtual void setCookies(
@@ skipping 82 matching lines @@
         // Callable from a background WebKit thread.
         virtual void callOnMainThread(void (*func)()) = 0;
 
     protected:
         ~WebKitClient() { }
     };
 
 } // namespace WebKit
 
 #endif