Created uber tray UI for monitoring ongoing WebDrive sync operations

ash/shell.cc

Index: ash/shell.cc
diff --git a/ash/shell.cc b/ash/shell.cc
index d025e4d17520b803eaaeef575dae7852f1f8d76f..36391fdde992dfff2d6a42ac65333d1b76508757 100644
--- a/ash/shell.cc
+++ b/ash/shell.cc
@@ -309,6 +309,9 @@ class DummySystemTrayDelegate : public SystemTrayDelegate {
   virtual void ShowBluetoothSettings() OVERRIDE {
   }
 
+  virtual void ShowDriveSettings() OVERRIDE {
+  }
+
   virtual void ShowIMESettings() OVERRIDE {
   }
 
@@ -375,6 +378,13 @@ class DummySystemTrayDelegate : public SystemTrayDelegate {
   virtual void ActivateIMEProperty(const std::string& key) OVERRIDE {
   }
 
+  virtual void CancelDriveOperation(const FilePath&) OVERRIDE {
+  }
+
+  virtual void GetDriveOperationStatusList(
+      ash::DriveOperationStatusList*) OVERRIDE {
+  }
+
   virtual void GetMostRelevantNetworkIcon(NetworkIconInfo* info,
                                           bool large) OVERRIDE {
   }