Code quality and standards in SimpleBackend.

net/disk_cache/simple/simple_synchronous_entry.h

Index: net/disk_cache/simple/simple_synchronous_entry.h
diff --git a/net/disk_cache/simple/simple_synchronous_entry.h b/net/disk_cache/simple/simple_synchronous_entry.h
index f91262cb6a7683c34010e05c461b597ff1522347..5cdf449e439054c3a71011aa7fdc5b37641ba431 100644
--- a/net/disk_cache/simple/simple_synchronous_entry.h
+++ b/net/disk_cache/simple/simple_synchronous_entry.h
@@ -45,13 +45,13 @@ class SimpleSynchronousEntry {
   static void OpenEntry(
       const base::FilePath& path,
       const std::string& key,
-      const scoped_refptr<base::TaskRunner>& callback_runner,
+      base::SingleThreadTaskRunner* callback_runner,
       const SynchronousCreationCallback& callback);
 
   static void CreateEntry(
       const base::FilePath& path,
       const std::string& key,
-      const scoped_refptr<base::TaskRunner>& callback_runner,
+      base::SingleThreadTaskRunner* callback_runner,
       const SynchronousCreationCallback& callback);
 
   // Deletes an entry without first Opening it. Does not check if there is
@@ -60,7 +60,7 @@ class SimpleSynchronousEntry {
   // run by |callback_runner|.
   static void DoomEntry(const base::FilePath& path,
                         const std::string& key,
-                        const scoped_refptr<base::TaskRunner>& callback_runner,
+                        base::SingleThreadTaskRunner* callback_runner,
                         const net::CompletionCallback& callback);
 
   // N.B. Close(), ReadData() and WriteData() may block on IO.
@@ -87,7 +87,7 @@ class SimpleSynchronousEntry {
 
  private:
   SimpleSynchronousEntry(
-      const scoped_refptr<base::TaskRunner>& callback_runner,
+      base::SingleThreadTaskRunner* callback_runner,
       const base::FilePath& path,
       const std::string& key);
 
@@ -106,7 +106,7 @@ class SimpleSynchronousEntry {
 
   void Doom();
 
-  scoped_refptr<base::TaskRunner> callback_runner_;
+  scoped_refptr<base::SingleThreadTaskRunner> callback_runner_;
   const base::FilePath path_;
   const std::string key_;