Implement ToValue() for SystemMetrics, SystemMemoryInfoKB, DiskInfo, and SwapInfo.

base/process/process_metrics.cc

Index: base/process/process_metrics.cc
diff --git a/base/process/process_metrics.cc b/base/process/process_metrics.cc
index 965aaab3010934e88fe1c36c39d97eee767c38c7..0d1ee12acae9f2588057b53db62714fe861c7b2e 100644
--- a/base/process/process_metrics.cc
+++ b/base/process/process_metrics.cc
@@ -25,4 +25,21 @@ SystemMetrics SystemMetrics::Sample() {
   return system_metrics;
 }
 
+Value* SystemMetrics::AsValue() const {
+  DictionaryValue* res = new base::DictionaryValue();
+
+  res->SetInteger("committed_memory", committed_memory_);
+#if defined(OS_LINUX) || defined(OS_ANDROID)
+  res->Set("meminfo", memory_info_.AsValue());
+#endif
+#if defined(OS_LINUX)
+  res->Set("diskinfo", disk_info_.AsValue());
+#endif
+#if defined(OS_CHROMEOS)
+  res->Set("swapinfo", swap_info_.AsValue());
+#endif
+
+  return res;
+}
+
 }  // namespace base