chromeos: Change all clients of UpdateLibrary to use UpdateEngineClient.

chrome/browser/chromeos/upgrade_detector_chromeos.h

Index: chrome/browser/chromeos/upgrade_detector_chromeos.h
diff --git a/chrome/browser/chromeos/upgrade_detector_chromeos.h b/chrome/browser/chromeos/upgrade_detector_chromeos.h
index e343d6b03ce5a4c771152426629f977ca8c68ce7..89a0fa895a69fe60a76c9b6c2aff45781c427b94 100644
--- a/chrome/browser/chromeos/upgrade_detector_chromeos.h
+++ b/chrome/browser/chromeos/upgrade_detector_chromeos.h
@@ -7,13 +7,13 @@
 #pragma once
 
 #include "base/timer.h"
-#include "chrome/browser/chromeos/cros/update_library.h"
+#include "chrome/browser/chromeos/dbus/update_engine_client.h"
 #include "chrome/browser/upgrade_detector.h"
 
 template <typename T> struct DefaultSingletonTraits;
 
 class UpgradeDetectorChromeos : public UpgradeDetector,
-                                public chromeos::UpdateLibrary::Observer {
+                                public chromeos::UpdateEngineClient::Observer {
  public:
   virtual ~UpgradeDetectorChromeos();
 
@@ -32,9 +32,9 @@ class UpgradeDetectorChromeos : public UpgradeDetector,
 
   UpgradeDetectorChromeos();
 
-  // chromeos::UpdateLibrary::Observer implementation.
+  // chromeos::UpdateEngineClient::Observer implementation.
   virtual void UpdateStatusChanged(
-      const chromeos::UpdateLibrary::Status& status);
+      const chromeos::UpdateEngineClient::Status& status) OVERRIDE;
 
   // The function that sends out a notification (after a certain time has
   // elapsed) that lets the rest of the UI know we should start notifying the