Cleanup: Deprecate FileSystemCallbackDispatcher

content/common/fileapi/webfilewriter_impl.cc

Index: content/common/fileapi/webfilewriter_impl.cc
diff --git a/content/common/fileapi/webfilewriter_impl.cc b/content/common/fileapi/webfilewriter_impl.cc
index ac685e1b78fbb7358aead0a4b94da71286b435da..fed77f57f9ec23217119e4c138a50b13142f0916 100644
--- a/content/common/fileapi/webfilewriter_impl.cc
+++ b/content/common/fileapi/webfilewriter_impl.cc
@@ -4,60 +4,19 @@
 
 #include "content/common/fileapi/webfilewriter_impl.h"
 
+#include "base/bind.h"
 #include "content/common/child_thread.h"
 #include "content/common/fileapi/file_system_dispatcher.h"
 
 namespace content {
+
 namespace {
 
 inline FileSystemDispatcher* GetFileSystemDispatcher() {
   return ChildThread::current()->file_system_dispatcher();
 }
-}
-
-class WebFileWriterImpl::CallbackDispatcher
-    : public fileapi::FileSystemCallbackDispatcher {
- public:
-  explicit CallbackDispatcher(
-      const base::WeakPtr<WebFileWriterImpl>& writer) : writer_(writer) {
-  }
-  virtual ~CallbackDispatcher() {
-  }
-  virtual void DidReadMetadata(
-      const base::PlatformFileInfo&,
-      const base::FilePath&) OVERRIDE {
-    NOTREACHED();
-  }
-  virtual void DidCreateSnapshotFile(
-      const base::PlatformFileInfo&,
-      const base::FilePath&) OVERRIDE {
-    NOTREACHED();
-  }
-  virtual void DidReadDirectory(
-      const std::vector<base::FileUtilProxy::Entry>& entries,
-      bool has_more) OVERRIDE {
-    NOTREACHED();
-  }
-  virtual void DidOpenFileSystem(const std::string& name,
-                                 const GURL& root) OVERRIDE {
-    NOTREACHED();
-  }
-  virtual void DidSucceed() OVERRIDE {
-    if (writer_)
-      writer_->DidSucceed();
-  }
-  virtual void DidFail(base::PlatformFileError error_code) OVERRIDE {
-    if (writer_)
-      writer_->DidFail(error_code);
-  }
-  virtual void DidWrite(int64 bytes, bool complete) OVERRIDE {
-    if (writer_)
-      writer_->DidWrite(bytes, complete);
-  }
 
- private:
-  base::WeakPtr<WebFileWriterImpl> writer_;
-};
+}  // namespace
 
 WebFileWriterImpl::WebFileWriterImpl(
      const GURL& path, WebKit::WebFileWriterClient* client)
@@ -70,20 +29,23 @@ WebFileWriterImpl::~WebFileWriterImpl() {
 
 void WebFileWriterImpl::DoTruncate(const GURL& path, int64 offset) {
   // The FileSystemDispatcher takes ownership of the CallbackDispatcher.
-  GetFileSystemDispatcher()->Truncate(path, offset, &request_id_,
-                                      new CallbackDispatcher(AsWeakPtr()));
+  GetFileSystemDispatcher()->Truncate(
+      path, offset, &request_id_,
+      base::Bind(&WebFileWriterImpl::DidFinish, AsWeakPtr()));
 }
 
 void WebFileWriterImpl::DoWrite(
     const GURL& path, const GURL& blob_url, int64 offset) {
   GetFileSystemDispatcher()->Write(
       path, blob_url, offset, &request_id_,
-      new CallbackDispatcher(AsWeakPtr()));
+      base::Bind(&WebFileWriterImpl::DidWrite, AsWeakPtr()),
+      base::Bind(&WebFileWriterImpl::DidFinish, AsWeakPtr()));
 }
 
 void WebFileWriterImpl::DoCancel() {
-  GetFileSystemDispatcher()->Cancel(request_id_,
-                                    new CallbackDispatcher(AsWeakPtr()));
+  GetFileSystemDispatcher()->Cancel(
+      request_id_,
+      base::Bind(&WebFileWriterImpl::DidFinish, AsWeakPtr()));
 }
 
 }  // namespace content