[Onion Soup] Remove dead memory usage code in BlinkPlatformImpl.

third_party/WebKit/public/platform/Platform.h

 /*
  * Copyright (C) 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 241 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 WebString& challenge, const WebURL& url, const WebURL& topOrigin)
     {
         return WebString();
     }
 
-    // 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() { return 0; }
-
     // Same as above, but always returns actual value, without any caches.
     virtual size_t actualMemoryUsageMB() { return 0; }
 
-    // Return the physical memory of the current machine, in MB.
-    virtual size_t physicalMemoryMB() { return 0; }
-
-    // Return the available virtual memory of the current machine, in MB. Or
-    // zero, if there is no limit.
-    virtual size_t virtualMemoryLimitMB() { return 0; }
-
     // Return the number of of processors of the current machine.
     virtual size_t numberOfProcessors() { return 0; }
 
     // Allocates discardable memory. May return nullptr, even if the platform supports
     // discardable memory. If nonzero, however, then the WebDiscardableMmeory is
     // returned in an locked state. You may use its underlying data() member
     // directly, taking care to unlock it when you are ready to let it become
     // discardable.
     virtual WebDiscardableMemory* allocateAndLockDiscardableMemory(size_t bytes) { return nullptr; }
 
@@ skipping 350 matching lines @@
 protected:
     BLINK_PLATFORM_EXPORT Platform();
     virtual ~Platform() { }
 
     WebThread* m_mainThread;
 };
 
 } // namespace blink
 
 #endif