Remove CanLoadPage; it's essentially unused, and not compatible with

content/browser/child_process_security_policy_impl.h

Index: content/browser/child_process_security_policy_impl.h
diff --git a/content/browser/child_process_security_policy_impl.h b/content/browser/child_process_security_policy_impl.h
index 7ec669b68a50450c7944fddd9eb5e59649918004..522a377c07e37ea5d0f500d600901060450e44af 100644
--- a/content/browser/child_process_security_policy_impl.h
+++ b/content/browser/child_process_security_policy_impl.h
@@ -126,13 +126,6 @@ class CONTENT_EXPORT ChildProcessSecurityPolicyImpl
   // request the URL.
   bool CanRequestURL(int child_id, const GURL& url);
 
-  // Returns true if the process is permitted to load pages from
-  // the given origin in main frames or subframes.
-  // Only might return false if --site-per-process flag is used.
-  bool CanLoadPage(int child_id,
-                   const GURL& url,
-                   ResourceType resource_type);
-
   // Explicit permissions checks for FileSystemURL specified files.
   bool CanReadFileSystemFile(int child_id, const storage::FileSystemURL& url);
   bool CanWriteFileSystemFile(int child_id, const storage::FileSystemURL& url);