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

third_party/WebKit/public/platform/Platform.h

Index: third_party/WebKit/public/platform/Platform.h
diff --git a/third_party/WebKit/public/platform/Platform.h b/third_party/WebKit/public/platform/Platform.h
index 8f4793b22fa5b8956afa4787b546fd5e362e9410..2454f28872e2b0dec33a528f91238c8d7a89b190 100644
--- a/third_party/WebKit/public/platform/Platform.h
+++ b/third_party/WebKit/public/platform/Platform.h
@@ -259,22 +259,9 @@ public:
         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; }