Move apps/shell to extensions/shell.

extensions/shell/app/shell_main_delegate.h

Index: extensions/shell/app/shell_main_delegate.h
diff --git a/apps/shell/app/shell_main_delegate.h b/extensions/shell/app/shell_main_delegate.h
similarity index 89%
rename from apps/shell/app/shell_main_delegate.h
rename to extensions/shell/app/shell_main_delegate.h
index 465f60ee1d257266bed81ccd9248f86bbe31654b..abd564ab1b1a05a904f4b0d063a7401aee93b19b 100644
--- a/apps/shell/app/shell_main_delegate.h
+++ b/extensions/shell/app/shell_main_delegate.h
@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef APPS_SHELL_APP_SHELL_MAIN_DELEGATE_H_
-#define APPS_SHELL_APP_SHELL_MAIN_DELEGATE_H_
+#ifndef EXTENSIONS_SHELL_APP_SHELL_MAIN_DELEGATE_H_
+#define EXTENSIONS_SHELL_APP_SHELL_MAIN_DELEGATE_H_
 
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
@@ -16,7 +16,7 @@ class ContentClient;
 class ContentRendererClient;
 }
 
-namespace apps {
+namespace extensions {
 class ShellBrowserMainDelegate;
 class ShellRendererMainDelegate;
 
@@ -55,6 +55,6 @@ class ShellMainDelegate : public content::ContentMainDelegate {
   DISALLOW_COPY_AND_ASSIGN(ShellMainDelegate);
 };
 
-}  // namespace apps
+}  // namespace extensions
 
-#endif  // APPS_SHELL_APP_SHELL_MAIN_DELEGATE_H_
+#endif  // EXTENSIONS_SHELL_APP_SHELL_MAIN_DELEGATE_H_