Use base::Callback in Quota related code.

content/browser/file_system/file_system_browsertest.cc

Index: content/browser/file_system/file_system_browsertest.cc
diff --git a/content/browser/file_system/file_system_browsertest.cc b/content/browser/file_system/file_system_browsertest.cc
index dfa9245cc0bcf87a4f9ecd58898d536bd6b32703..9c20d1135ded65d20bdc2f2797afef82677f6509 100644
--- a/content/browser/file_system/file_system_browsertest.cc
+++ b/content/browser/file_system/file_system_browsertest.cc
@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+#include "base/bind.h"
 #include "base/command_line.h"
 #include "base/file_path.h"
 #include "base/memory/ref_counted.h"
@@ -63,18 +64,11 @@ class FileSystemBrowserTestWithLowQuota : public FileSystemBrowserTest {
         kTemporaryStorageQuotaMaxSize, browser()->profile()->GetQuotaManager());
   }
 
-  class SetTempQuotaCallback : public quota::QuotaCallback {
-   public:
-    void Run(quota::QuotaStatusCode, quota::StorageType, int64) {
-      DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
-    }
-
-    void RunWithParams(const Tuple3<quota::QuotaStatusCode,
-                                    quota::StorageType,
-                                    int64>& params) {
-      Run(params.a, params.b, params.c);
-    }
-  };
+  static void DidSetTempQuota(quota::QuotaStatusCode status,
+                              quota::StorageType type,
+                              int64 quota) {
+    DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
+  }
 
   static void SetTempQuota(int64 bytes, scoped_refptr<QuotaManager> qm) {
     if (!BrowserThread::CurrentlyOn(BrowserThread::IO)) {
@@ -84,7 +78,9 @@ class FileSystemBrowserTestWithLowQuota : public FileSystemBrowserTest {
       return;
     }
     DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
-    qm->SetTemporaryGlobalQuota(bytes, new SetTempQuotaCallback);
+    qm->SetTemporaryGlobalQuota(
+        bytes,
+        base::Bind(&FileSystemBrowserTestWithLowQuota::DidSetTempQuota));
     // Don't return until the quota has been set.
     scoped_refptr<base::ThreadTestHelper> helper(
         new base::ThreadTestHelper(