Moved CrxInstaller and CrxInstallerError into extensions namespace

chrome/browser/extensions/extension_install_ui_default.h

Index: chrome/browser/extensions/extension_install_ui_default.h
diff --git a/chrome/browser/extensions/extension_install_ui_default.h b/chrome/browser/extensions/extension_install_ui_default.h
index 3c9e10309b25a761be610d78f77ccd4b322c2053..cf33a0a660b17d4c42c79da96d18a77eeccd0f5b 100644
--- a/chrome/browser/extensions/extension_install_ui_default.h
+++ b/chrome/browser/extensions/extension_install_ui_default.h
@@ -20,7 +20,8 @@ class ExtensionInstallUIDefault : public ExtensionInstallUI {
   // ExtensionInstallUI implementation:
   virtual void OnInstallSuccess(const extensions::Extension* extension,
                                 SkBitmap* icon) OVERRIDE;
-  virtual void OnInstallFailure(const CrxInstallerError& error) OVERRIDE;
+  virtual void OnInstallFailure(
+      const extensions::CrxInstallerError& error) OVERRIDE;
   virtual void SetSkipPostInstallUI(bool skip_ui) OVERRIDE;
   virtual void SetUseAppInstalledBubble(bool use_bubble) OVERRIDE;