Bind: Merge FileUtilProxy and FileSystemFileUtilProxy: Delete/Touch/Truncate/Copy/Move

base/file_util_proxy.cc

Index: base/file_util_proxy.cc
diff --git a/base/file_util_proxy.cc b/base/file_util_proxy.cc
index c63c75f505314e81dc5ca1560c7d1c1b2d45e3de..3cd899fc1ea16a4b58232a1feb5030b697a2fdcf 100644
--- a/base/file_util_proxy.cc
+++ b/base/file_util_proxy.cc
@@ -176,19 +176,6 @@ class CreateTemporaryHelper {
   DISALLOW_COPY_AND_ASSIGN(CreateTemporaryHelper);
 };
 
-PlatformFileError DeleteHelper(const FilePath& file_path, bool recursive) {
-  if (!file_util::PathExists(file_path)) {
-    return PLATFORM_FILE_ERROR_NOT_FOUND;
-  }
-  if (!file_util::Delete(file_path, recursive)) {
-    if (!recursive && !file_util::IsDirectoryEmpty(file_path)) {
-      return PLATFORM_FILE_ERROR_NOT_EMPTY;
-    }
-    return PLATFORM_FILE_ERROR_FAILED;
-  }
-  return PLATFORM_FILE_OK;
-}
-
 class GetFileInfoHelper {
  public:
   GetFileInfoHelper()
@@ -297,6 +284,19 @@ PlatformFileError CloseAdapter(PlatformFile file_handle) {
   return PLATFORM_FILE_OK;
 }
 
+PlatformFileError DeleteAdapter(const FilePath& file_path, bool recursive) {
+  if (!file_util::PathExists(file_path)) {
+    return PLATFORM_FILE_ERROR_NOT_FOUND;
+  }
+  if (!file_util::Delete(file_path, recursive)) {
+    if (!recursive && !file_util::IsDirectoryEmpty(file_path)) {
+      return PLATFORM_FILE_ERROR_NOT_EMPTY;
+    }
+    return PLATFORM_FILE_ERROR_FAILED;
+  }
+  return PLATFORM_FILE_OK;
+}
+
 }  // namespace
 
 // static
@@ -367,10 +367,10 @@ bool FileUtilProxy::Delete(scoped_refptr<MessageLoopProxy> message_loop_proxy,
                            const FilePath& file_path,
                            bool recursive,
                            const StatusCallback& callback) {
-  return PostTaskAndReplyWithStatus<PlatformFileError>(
+  return RelayFileTask(
       message_loop_proxy, FROM_HERE,
-      Bind(&DeleteHelper, file_path, recursive), callback,
-      new PlatformFileError);
+      Bind(&DeleteAdapter, file_path, recursive),
+      callback);
 }
 
 // static
@@ -378,10 +378,10 @@ bool FileUtilProxy::RecursiveDelete(
     scoped_refptr<MessageLoopProxy> message_loop_proxy,
     const FilePath& file_path,
     const StatusCallback& callback) {
-  return PostTaskAndReplyWithStatus<PlatformFileError>(
+  return RelayFileTask(
       message_loop_proxy, FROM_HERE,
-      Bind(&DeleteHelper, file_path, true /* recursive */), callback,
-      new PlatformFileError);
+      Bind(&DeleteAdapter, file_path, true /* recursive */),
+      callback);
 }
 
 // static
@@ -472,6 +472,19 @@ bool FileUtilProxy::Flush(
 }
 
 // static
+bool FileUtilProxy::RelayFileTask(
+    scoped_refptr<MessageLoopProxy> message_loop_proxy,
+    const tracked_objects::Location& from_here,
+    const FileTask& file_task,
+    const StatusCallback& callback) {
+  PlatformFileError* result = new PlatformFileError;
+  return message_loop_proxy->PostTaskAndReply(
+      from_here,
+      ReturnAsParam(file_task, result),
+      ReplyHelper(callback, Owned(result)));
+}
+
+// static
 bool FileUtilProxy::RelayCreateOrOpen(
     scoped_refptr<MessageLoopProxy> message_loop_proxy,
     const CreateOrOpenTask& open_task,