Expose the virtual memory limit to blink

base/sys_info.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef BASE_SYS_INFO_H_
 #define BASE_SYS_INFO_H_
 
 #include <map>
 #include <string>
 
@@ skipping 10 matching lines @@
   // Return the number of logical processors/cores on the current machine.
   static int NumberOfProcessors();
 
   // Return the number of bytes of physical memory on the current machine.
   static int64 AmountOfPhysicalMemory();
 
   // Return the number of bytes of current available physical memory on the
   // machine.
   static int64 AmountOfAvailablePhysicalMemory();
 
+  // Return the number of bytes of virtual memory of this process. A return
+  // value of zero means that there is no limit on the available virtual
+  // memory.
+  static int64 AmountOfVirtualMemory();
+
   // Return the number of megabytes of physical memory on the current machine.
   static int AmountOfPhysicalMemoryMB() {
     return static_cast<int>(AmountOfPhysicalMemory() / 1024 / 1024);
   }
 
+  // Return the number of megabytes of available virtual memory, or zero if it
+  // is unlimited.
+  static int AmountOfVirtualMemoryMB() {
+    return static_cast<int>(AmountOfVirtualMemory() / 1024 / 1024);
+  }
+
   // Return the available disk space in bytes on the volume containing |path|,
   // or -1 on failure.
   static int64 AmountOfFreeDiskSpace(const FilePath& path);
 
   // Returns system uptime in milliseconds.
   static int64 Uptime();
 
   // Returns the name of the host operating system.
   static std::string OperatingSystemName();
 
@@ skipping 70 matching lines @@
   static std::string GetDeviceName();
 
   static int DalvikHeapSizeMB();
   static int DalvikHeapGrowthLimitMB();
 #endif  // defined(OS_ANDROID)
 };
 
 }  // namespace base
 
 #endif  // BASE_SYS_INFO_H_