Return error to chrome.downloads.removeFile

content/browser/download/download_item_impl.cc

Index: content/browser/download/download_item_impl.cc
diff --git a/content/browser/download/download_item_impl.cc b/content/browser/download/download_item_impl.cc
index 380a219cf0e64b44eded274cec9a48f8e31f38bd..be78ab35ccfb4c3c404daa119b3fb12e74ccbf6a 100644
--- a/content/browser/download/download_item_impl.cc
+++ b/content/browser/download/download_item_impl.cc
@@ -616,7 +616,7 @@ bool DownloadItemImpl::GetFileExternallyRemoved() const {
   return file_externally_removed_;
 }
 
-void DownloadItemImpl::DeleteFile() {
+void DownloadItemImpl::DeleteFile(const base::Callback<void(bool)>& callback) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   if ((GetState() != DownloadItem::COMPLETE) ||
       file_externally_removed_) {
@@ -625,11 +625,21 @@ void DownloadItemImpl::DeleteFile() {
   BrowserThread::PostTaskAndReplyWithResult(
       BrowserThread::FILE, FROM_HERE,
       base::Bind(&DeleteDownloadedFile, current_path_),
-      base::Bind(&DownloadItemImpl::OnDownloadedFileRemoved,
-                 weak_ptr_factory_.GetWeakPtr()));
+      base::Bind(&DownloadItemImpl::DeleteFileDone,
+                 weak_ptr_factory_.GetWeakPtr(),
+                 callback));
   current_path_.clear();
 }
 
+void DownloadItemImpl::DeleteFileDone(
+    const base::Callback<void(bool)>& callback,
+    bool success) {
+  if (success) {
+    OnDownloadedFileRemoved();
+  }
+  callback.Run(success);
+}
+
 bool DownloadItemImpl::IsDangerous() const {
 #if defined(OS_WIN)
   // TODO(noelutz): At this point only the windows views UI supports
@@ -946,9 +956,7 @@ void DownloadItemImpl::NotifyRemoved() {
   FOR_EACH_OBSERVER(Observer, observers_, OnDownloadRemoved(this));
 }
 
-void DownloadItemImpl::OnDownloadedFileRemoved(bool success) {
-  if (!success)
-    return;
+void DownloadItemImpl::OnDownloadedFileRemoved() {
   file_externally_removed_ = true;
   VLOG(20) << __FUNCTION__ << " download=" << DebugString(true);
   UpdateObservers();