Revert of Lock down the registration of blob:chrome-extension:// URLs

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 916643f09e465e256509fee1724b7e85eaa45185..e0eaf4a971dd72990491ecf6dc4b0a20c3596a80 100644
--- a/content/browser/child_process_security_policy_impl.h
+++ b/content/browser/child_process_security_policy_impl.h
@@ -43,9 +43,6 @@
 
   // ChildProcessSecurityPolicy implementation.
   void RegisterWebSafeScheme(const std::string& scheme) override;
-  void RegisterWebSafeIsolatedScheme(
-      const std::string& scheme,
-      bool always_allow_in_origin_headers) override;
   bool IsWebSafeScheme(const std::string& scheme) override;
   void GrantReadFile(int child_id, const base::FilePath& file) override;
   void GrantCreateReadWriteFile(int child_id,
@@ -67,8 +64,6 @@
                                  const std::string& filesystem_id) override;
   void GrantOrigin(int child_id, const url::Origin& origin) override;
   void GrantScheme(int child_id, const std::string& scheme) override;
-  bool CanRequestURL(int child_id, const GURL& url) override;
-  bool CanCommitURL(int child_id, const GURL& url) override;
   bool CanReadFile(int child_id, const base::FilePath& file) override;
   bool CanCreateReadWriteFile(int child_id,
                               const base::FilePath& file) override;
@@ -132,6 +127,17 @@
   // Revoke read raw cookies permission.
   void RevokeReadRawCookies(int child_id);
 
+  // Before servicing a child process's request for a URL, the browser should
+  // call this method to determine whether the process has the capability to
+  // request the URL.
+  bool CanRequestURL(int child_id, const GURL& url);
+
+  // Whether the process is allowed to commit a document from the given URL.
+  // This is more restrictive than CanRequestURL, since CanRequestURL allows
+  // requests that might lead to cross-process navigations or external protocol
+  // handlers.
+  bool CanCommitURL(int child_id, const GURL& url);
+
   // Whether the given origin is valid for an origin header. Valid origin
   // headers are commitable URLs plus suborigin URLs.
   bool CanSetAsOriginHeader(int child_id, const GURL& url);
@@ -229,11 +235,9 @@
   // class.  You must not block while holding this lock.
   base::Lock lock_;
 
-  // These schemes are white-listed for all child processes in various contexts.
-  // These sets are protected by |lock_|.
-  SchemeSet schemes_okay_to_commit_in_any_process_;
-  SchemeSet schemes_okay_to_request_in_any_process_;
-  SchemeSet schemes_okay_to_appear_as_origin_headers_;
+  // These schemes are white-listed for all child processes.  This set is
+  // protected by |lock_|.
+  SchemeSet web_safe_schemes_;
 
   // These schemes do not actually represent retrievable URLs.  For example,
   // the the URLs in the "about" scheme are aliases to other URLs.  This set is