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 dcf476199773b5092f1c63cf3601845a86b29eb0..e44f84041b86861bb099f40d084cbc9682b1bc8d 100644
--- a/ash/shell.cc
+++ b/ash/shell.cc
@@ -308,6 +308,9 @@ class DummySystemTrayDelegate : public SystemTrayDelegate {
   virtual void ShowBluetoothSettings() OVERRIDE {
   }
 
+  virtual void ShowDriveSettings() OVERRIDE {
+  }
+
   virtual void ShowIMESettings() OVERRIDE {
   }
 
@@ -374,6 +377,13 @@ 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 {
   }