chromeos: Change all clients of LoginLibrary to use SessionManagerClient.

chrome/browser/chromeos/chrome_browser_main_chromeos.h

Index: chrome/browser/chromeos/chrome_browser_main_chromeos.h
diff --git a/chrome/browser/chromeos/chrome_browser_main_chromeos.h b/chrome/browser/chromeos/chrome_browser_main_chromeos.h
index f5f5f74687fdfc32e70432084991b1ce904abbd1..2786642e3bdbabe036705ecc2a39ede79547f3b2 100644
--- a/chrome/browser/chromeos/chrome_browser_main_chromeos.h
+++ b/chrome/browser/chromeos/chrome_browser_main_chromeos.h
@@ -17,6 +17,7 @@ typedef ChromeBrowserMainPartsPosix ChromeBrowserMainPartsBase;
 
 namespace chromeos {
 class BrightnessObserver;
+class SessionManagerObserver;
 }  // namespace chromeos
 
 class ChromeBrowserMainPartsChromeos : public ChromeBrowserMainPartsBase {
@@ -30,10 +31,10 @@ class ChromeBrowserMainPartsChromeos : public ChromeBrowserMainPartsBase {
   virtual void PreMainMessageLoopRun() OVERRIDE;
   virtual void PostMainMessageLoopStart() OVERRIDE;
 
-  DISALLOW_COPY_AND_ASSIGN(ChromeBrowserMainPartsChromeos);
-
  private:
   scoped_ptr<chromeos::BrightnessObserver> brightness_observer_;
+  scoped_ptr<chromeos::SessionManagerObserver> session_manager_observer_;
+  DISALLOW_COPY_AND_ASSIGN(ChromeBrowserMainPartsChromeos);
 };
 
 #endif  // CHROME_BROWSER_CHROMEOS_CHROME_BROWSER_MAIN_CHROMEOS_H_