Change "Save" to "Keep" in dangerous download confirmation prompt.

chrome/browser/ui/cocoa/download/download_item_controller.mm

Index: chrome/browser/ui/cocoa/download/download_item_controller.mm
diff --git a/chrome/browser/ui/cocoa/download/download_item_controller.mm b/chrome/browser/ui/cocoa/download/download_item_controller.mm
index d22474a124d7e02b2697af9b7b86049a7a6bffcb..801181a02206a4879eaefc187f9ef17fad36dbc4 100644
--- a/chrome/browser/ui/cocoa/download/download_item_controller.mm
+++ b/chrome/browser/ui/cocoa/download/download_item_controller.mm
@@ -177,7 +177,8 @@ class DownloadShelfContextMenuMac : public DownloadShelfContextMenu {
       alertIcon = rb.GetNativeImageNamed(IDR_SAFEBROWSING_WARNING);
       dangerousWarning = l10n_util::GetNSStringWithFixup(
           IDS_PROMPT_UNSAFE_DOWNLOAD_URL);
-      confirmButtonTitle = l10n_util::GetNSStringWithFixup(IDS_SAVE_DOWNLOAD);
+      confirmButtonTitle = l10n_util::GetNSStringWithFixup(
+          IDS_CONFIRM_DOWNLOAD);
     } else {
       // It's a dangerous file type (e.g.: an executable).
       DCHECK_EQ(downloadModel->download()->GetDangerType(),
@@ -218,7 +219,7 @@ class DownloadShelfContextMenuMac : public DownloadShelfContextMenu {
          dangerousWarning = l10n_util::GetNSStringFWithFixup(
              IDS_PROMPT_DANGEROUS_DOWNLOAD, UTF8ToUTF16(new_filename));
          confirmButtonTitle =
-             l10n_util::GetNSStringWithFixup(IDS_SAVE_DOWNLOAD);
+             l10n_util::GetNSStringWithFixup(IDS_CONFIRM_DOWNLOAD);
       }
     }
     DCHECK(alertIcon);