Port parts of base/process_util to Linux.

base/process_util_posix.cc

Index: base/process_util_posix.cc
===================================================================
--- base/process_util_posix.cc	(revision 3009)
+++ base/process_util_posix.cc	(working copy)
@@ -8,6 +8,7 @@
 #include <unistd.h>
 
 #include "base/basictypes.h"
+#include "base/sys_info.h"
 
 namespace process_util {
 
@@ -23,6 +24,19 @@
   return process;
 }
 
+ProcessMetrics::ProcessMetrics(ProcessHandle process) : process_(process),
+                                                        last_time_(0),
+                                                        last_system_time_(0) {
+  processor_count_ = base::SysInfo::NumberOfProcessors();
+}
+
+// static
+ProcessMetrics* ProcessMetrics::CreateProcessMetrics(ProcessHandle process) {
+  return new ProcessMetrics(process);
+}
+
+ProcessMetrics::~ProcessMetrics() { }
+
 void EnableTerminationOnHeapCorruption() {
   // On POSIX, there nothing to do AFAIK.
 }