Merge google-perftools r109 (the current contents of third_party/tcmalloc/vendor)

third_party/tcmalloc/chromium/src/base/sysinfo.h

Index: third_party/tcmalloc/chromium/src/base/sysinfo.h
===================================================================
--- third_party/tcmalloc/chromium/src/base/sysinfo.h	(revision 88335)
+++ third_party/tcmalloc/chromium/src/base/sysinfo.h	(working copy)
@@ -71,6 +71,8 @@
 
 extern int NumCPUs();
 
+void SleepForMilliseconds(int milliseconds);
+
 // processor cycles per second of each processor.  Thread-safe.
 extern double CyclesPerSecond(void);
 
@@ -226,7 +228,7 @@
 // Helper routines
 
 namespace tcmalloc {
-int FillProcSelfMaps(char buf[], int size);
+int FillProcSelfMaps(char buf[], int size, bool* wrote_all);
 void DumpProcSelfMaps(RawFD fd);
 }