Adds imageWriterPrivate support for Windows

chrome/browser/extensions/api/image_writer_private/operation.cc

Index: chrome/browser/extensions/api/image_writer_private/operation.cc
diff --git a/chrome/browser/extensions/api/image_writer_private/operation.cc b/chrome/browser/extensions/api/image_writer_private/operation.cc
index dcd147f4ecf03340fc5f8f8e9f1405b114ccafff..8e7eb6913eb93e55c88bc278fb8a368dd948e8ea 100644
--- a/chrome/browser/extensions/api/image_writer_private/operation.cc
+++ b/chrome/browser/extensions/api/image_writer_private/operation.cc
@@ -21,6 +21,7 @@ namespace {
 const int kMD5BufferSize = 1024;
 
 void RemoveTempDirectory(const base::FilePath path) {
+  DVLOG(1) << "Removing temporary directory: " << path.value();
   base::DeleteFile(path, true);
 }
 
@@ -51,6 +52,18 @@ void Operation::Abort() {
   Error(error::kAborted);
 }
 
+void Operation::OnWriteImageSucceeded() {
+  Finish();
+}
+
+void Operation::OnWriteImageFailed(const std::string& message) {
+  Error(message);
+}
+
+void Operation::OnWriteImageProgress(int progress) {
+  SetProgress(progress);
+}
+
 void Operation::Error(const std::string& error_message) {
   if (!BrowserThread::CurrentlyOn(BrowserThread::FILE)) {
     BrowserThread::PostTask(BrowserThread::FILE,