New wifi icons animation.

chrome/browser/chromeos/cros_network_library.h

Index: chrome/browser/chromeos/cros_network_library.h
===================================================================
--- chrome/browser/chromeos/cros_network_library.h	(revision 30284)
+++ chrome/browser/chromeos/cros_network_library.h	(working copy)
@@ -12,6 +12,8 @@
 #include "base/platform_thread.h"
 #include "base/singleton.h"
 #include "base/string16.h"
+#include "base/timer.h"
+#include "net/url_request/url_request_job_tracker.h"
 #include "third_party/cros/chromeos_network.h"
 
 struct WifiNetwork {
@@ -51,11 +53,22 @@
 // This class handles the interaction with the ChromeOS network library APIs.
 // Classes can add themselves as observers. Users can get an instance of this
 // library class like this: CrosNetworkLibrary::Get()
-class CrosNetworkLibrary {
+class CrosNetworkLibrary : public URLRequestJobTracker::JobObserver {
  public:
   class Observer {
    public:
+    // A bitfield mask for traffic types.
+    enum TrafficTypes {
+      TRAFFIC_DOWNLOAD = 0x1,
+      TRAFFIC_UPLOAD = 0x2,
+    } TrafficTypeMasks;
+
+    // Called when the network has changed. (wifi networks, and ethernet)
     virtual void NetworkChanged(CrosNetworkLibrary* obj) = 0;
+
+    // Called when network traffic has been detected.
+    // Takes a bitfield of TrafficTypeMasks.
+    virtual void NetworkTraffic(CrosNetworkLibrary* obj, int traffic_type) = 0;
   };
 
   // This gets the singleton CrosNetworkLibrary
@@ -64,6 +77,14 @@
   // Returns true if the ChromeOS library was loaded.
   static bool loaded();
 
+  // URLRequestJobTracker::JobObserver methods (called on the IO thread):
+  virtual void OnJobAdded(URLRequestJob* job);
+  virtual void OnJobRemoved(URLRequestJob* job);
+  virtual void OnJobDone(URLRequestJob* job, const URLRequestStatus& status);
+  virtual void OnJobRedirect(URLRequestJob* job, const GURL& location,
+                             int status_code);
+  virtual void OnBytesRead(URLRequestJob* job, int byte_count);
+
   void AddObserver(Observer* observer);
   void RemoveObserver(Observer* observer);
 
@@ -104,8 +125,35 @@
   void UpdateNetworkStatus(const WifiNetworkVector& networks,
                            bool ethernet_connected);
 
+  // Checks network traffic to see if there is any uploading.
+  // If there is download traffic, then true is passed in for download.
+  // If there is network traffic then start timer that invokes
+  // NetworkTrafficTimerFired.
+  void CheckNetworkTraffic(bool download);
+
+  // Called when the timer fires and we need to send out NetworkTraffic
+  // notifications.
+  void NetworkTrafficTimerFired();
+
+  // This is a helper method to notify the observers on the UI thread.
+  void NotifyNetworkTraffic(int traffic_type);
+
+  // This will notify all obeservers on the UI thread.
+  void NotifyObservers();
+
   ObserverList<Observer> observers_;
 
+  // The amount of time to wait between each NetworkTraffic notifications.
+  static const int kNetworkTrafficeTimerSecs;
+
+  // Timer for sending NetworkTraffic notification every
+  // kNetworkTrafficeTimerSecs seconds.
+  base::OneShotTimer<CrosNetworkLibrary> timer_;
+
+  // The current traffic type that will be sent out for the next NetworkTraffic
+  // notification. This is a bitfield of TrafficTypeMasks.
+  int traffic_type_;
+
   // The network status connection for monitoring network status changes.
   chromeos::NetworkStatusConnection network_status_connection_;