Expose the virtual memory limit to blink

V8 queries the limit before sandbox initialization via static
initializers. We should pass it in like the other memory related values
instead.

BUG=none
R=mark@chromium.org

Review URL: https://codereview.chromium.org/227113011

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@262544 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 11 insertions, 0 deletions

diff --git a/base/sys_info.h b/base/sys_info.h
index aa40cad..7ce4e65 100644
--- a/base/sys_info.h
+++ b/base/sys_info.h
@@ -28,11 +28,22 @@ class BASE_EXPORT SysInfo {
   // 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);