Change webkit/{fileapi,quota} code to use TaskRunner.

webkit/quota/quota_manager.h

Index: webkit/quota/quota_manager.h
diff --git a/webkit/quota/quota_manager.h b/webkit/quota/quota_manager.h
index 65361521ac9e697bdd0253d28228ec23037e7ad4..72322c40eb66b02642735a11333943e88160001e 100644
--- a/webkit/quota/quota_manager.h
+++ b/webkit/quota/quota_manager.h
@@ -18,9 +18,9 @@
 #include "base/callback.h"
 #include "base/file_path.h"
 #include "base/memory/ref_counted.h"
-#include "base/memory/weak_ptr.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
+#include "base/memory/weak_ptr.h"
 #include "webkit/quota/quota_database.h"
 #include "webkit/quota/quota_client.h"
 #include "webkit/quota/quota_task.h"
@@ -30,7 +30,8 @@
 class FilePath;
 
 namespace base {
-class MessageLoopProxy;
+class SequencedTaskRunner;
+class SingleThreadTaskRunner;
 }
 
 namespace quota_internals {
@@ -105,8 +106,8 @@ class QuotaManager : public QuotaTaskObserver,
 
   QuotaManager(bool is_incognito,
                const FilePath& profile_path,
-               base::MessageLoopProxy* io_thread,
-               base::MessageLoopProxy* db_thread,
+               base::SingleThreadTaskRunner* io_thread,
+               base::SequencedTaskRunner* db_thread,
                SpecialStoragePolicy* special_storage_policy);
 
   virtual ~QuotaManager();
@@ -349,8 +350,8 @@ class QuotaManager : public QuotaTaskObserver,
   scoped_refptr<QuotaManagerProxy> proxy_;
   bool db_disabled_;
   bool eviction_disabled_;
-  scoped_refptr<base::MessageLoopProxy> io_thread_;
-  scoped_refptr<base::MessageLoopProxy> db_thread_;
+  scoped_refptr<base::SingleThreadTaskRunner> io_thread_;
+  scoped_refptr<base::SequencedTaskRunner> db_thread_;
   mutable scoped_ptr<QuotaDatabase> database_;
 
   GetLRUOriginCallback lru_origin_callback_;
@@ -415,11 +416,12 @@ class QuotaManagerProxy
   friend class QuotaManager;
   friend class base::RefCountedThreadSafe<QuotaManagerProxy>;
 
-  QuotaManagerProxy(QuotaManager* manager, base::MessageLoopProxy* io_thread);
+  QuotaManagerProxy(QuotaManager* manager,
+                    base::SingleThreadTaskRunner* io_thread);
   virtual ~QuotaManagerProxy();
 
   QuotaManager* manager_;  // only accessed on the io thread
-  scoped_refptr<base::MessageLoopProxy> io_thread_;
+  scoped_refptr<base::SingleThreadTaskRunner> io_thread_;
 
   DISALLOW_COPY_AND_ASSIGN(QuotaManagerProxy);
 };