SystemMonitor refactoring: move power state monitor into a separate class called PowerMonitor

net/url_request/url_request_job.h

Index: net/url_request/url_request_job.h
diff --git a/net/url_request/url_request_job.h b/net/url_request/url_request_job.h
index 56e1307cb041b5a051cc4aec8115d51a291bf97a..4f0d479489cdd19296999ddc799bd77541c66c1b 100644
--- a/net/url_request/url_request_job.h
+++ b/net/url_request/url_request_job.h
@@ -11,7 +11,8 @@
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
-#include "base/system_monitor/system_monitor.h"
+#include "base/message_loop.h"
+#include "base/power_monitor/power_observer.h"
 #include "googleurl/src/gurl.h"
 #include "net/base/filter.h"
 #include "net/base/host_port_pair.h"
@@ -38,7 +39,7 @@ class URLRequestStatus;
 class X509Certificate;
 
 class NET_EXPORT URLRequestJob : public base::RefCounted<URLRequestJob>,
-                                 public base::SystemMonitor::PowerObserver {
+    public base::PowerObserver {
  public:
   explicit URLRequestJob(URLRequest* request,
                          NetworkDelegate* network_delegate);
@@ -189,7 +190,7 @@ class NET_EXPORT URLRequestJob : public base::RefCounted<URLRequestJob>,
   // See url_request.h for details.
   virtual HostPortPair GetSocketAddress() const;
 
-  // base::SystemMonitor::PowerObserver methods:
+  // base::PowerObserver methods:
   // We invoke URLRequestJob::Kill on suspend (crbug.com/4606).
   virtual void OnSuspend() OVERRIDE;