add "remove" to download item context menu on mac

chrome/browser/cocoa/download_item_controller.mm

Index: chrome/browser/cocoa/download_item_controller.mm
diff --git a/chrome/browser/cocoa/download_item_controller.mm b/chrome/browser/cocoa/download_item_controller.mm
index 52ac1a17a71930642805bd01779cd3c9d7d4ae3d..fdbdd489930c7c5cd186b79e1f3e12147e108b4c 100644
--- a/chrome/browser/cocoa/download_item_controller.mm
+++ b/chrome/browser/cocoa/download_item_controller.mm
@@ -27,6 +27,7 @@ class DownloadShelfContextMenuMac : public DownloadShelfContextMenu {
   using DownloadShelfContextMenu::OPEN_WHEN_COMPLETE;
   using DownloadShelfContextMenu::ALWAYS_OPEN_TYPE;
   using DownloadShelfContextMenu::CANCEL;
+  using DownloadShelfContextMenu::REMOVE_ITEM;
 };
 
 
@@ -114,6 +115,8 @@ class DownloadShelfContextMenuMac : public DownloadShelfContextMenu {
     actionId = DownloadShelfContextMenuMac::ALWAYS_OPEN_TYPE;
   } else if (action == @selector(handleReveal:)) {
     actionId = DownloadShelfContextMenuMac::SHOW_IN_FOLDER;
+  } else if (action == @selector(handleRemove:)) {
+    actionId = DownloadShelfContextMenuMac::REMOVE_ITEM;
   } else if (action == @selector(handleCancel:)) {
     actionId = DownloadShelfContextMenuMac::CANCEL;
   } else {
@@ -143,6 +146,10 @@ class DownloadShelfContextMenuMac : public DownloadShelfContextMenu {
   menuBridge_->ExecuteItemCommand(DownloadShelfContextMenuMac::SHOW_IN_FOLDER);
 }
 
+- (IBAction)handleRemove:(id)sender {
+  menuBridge_->ExecuteItemCommand(DownloadShelfContextMenuMac::REMOVE_ITEM);
+}
+
 - (IBAction)handleCancel:(id)sender {
   menuBridge_->ExecuteItemCommand(DownloadShelfContextMenuMac::CANCEL);
 }