diff --git a/content/shell/android/shell_manager.h b/content/shell/android/shell_manager.h
index f4c3aabdb5681..b5d3b7e2a06b6 100644
--- a/content/shell/android/shell_manager.h
+++ b/content/shell/android/shell_manager.h
@@ -12,10 +12,6 @@
 
 class Shell;
 
-namespace cc {
-class Layer;
-}
-
 namespace content {
 
 // Creates an Android specific shell view, which is our version of a shell
@@ -27,9 +23,6 @@ base::android::ScopedJavaLocalRef<jobject> CreateShellView(Shell* shell);
 // Removes a previously created shell view.
 void RemoveShellView(const base::android::JavaRef<jobject>& shell_view);
 
-void ShellAttachLayer(cc::Layer* layer);
-void ShellRemoveLayer(cc::Layer* layer);
-
 // Destroys the ShellManager on app exit. Must not use the above functions
 // after this is called.
 void DestroyShellManager();