Improve the UI for disabling off-store extension install.

chrome/browser/download/download_item_model.cc

Index: chrome/browser/download/download_item_model.cc
diff --git a/chrome/browser/download/download_item_model.cc b/chrome/browser/download/download_item_model.cc
index 2dc23262222f6c3c5004a69b9a112b892d3b2509..775fa0513febb6069185c5af50ad7e624d3dde24 100644
--- a/chrome/browser/download/download_item_model.cc
+++ b/chrome/browser/download/download_item_model.cc
@@ -9,7 +9,8 @@
 #include "base/string16.h"
 #include "base/sys_string_conversions.h"
 #include "base/utf_string_conversions.h"
-#include "chrome/browser/download/chrome_download_manager_delegate.h"
+#include "base/time.h"
+#include "chrome/browser/download/download_crx_util.h"
 #include "chrome/common/time_format.h"
 #include "content/public/browser/download_danger_type.h"
 #include "content/public/browser/download_interrupt_reasons.h"
@@ -85,7 +86,7 @@ string16 DownloadItemModel::GetStatusText() {
         break;
       }
 #endif
-      if (ChromeDownloadManagerDelegate::IsExtensionDownload(download_) &&
+      if (download_crx_util::IsExtensionDownload(*download_) &&
           download_->AllDataSaved() &&
           download_->GetState() == DownloadItem::IN_PROGRESS) {
         // The download is a CRX (app, extension, theme, ...) and it is
@@ -183,7 +184,7 @@ string16 DownloadItemModel::GetWarningText(const gfx::Font& font,
       return l10n_util::GetStringUTF16(IDS_PROMPT_MALICIOUS_DOWNLOAD_URL);
 
     case content::DOWNLOAD_DANGER_TYPE_DANGEROUS_FILE:
-      if (ChromeDownloadManagerDelegate::IsExtensionDownload(download_)) {
+      if (download_crx_util::IsExtensionDownload(*download_)) {
         return l10n_util::GetStringUTF16(
             IDS_PROMPT_DANGEROUS_DOWNLOAD_EXTENSION);
       } else {
@@ -218,7 +219,7 @@ string16 DownloadItemModel::GetWarningConfirmButtonText() {
   DCHECK(IsDangerous());
   if (download_->GetDangerType() ==
           content::DOWNLOAD_DANGER_TYPE_DANGEROUS_FILE &&
-      ChromeDownloadManagerDelegate::IsExtensionDownload(download_)) {
+      download_crx_util::IsExtensionDownload(*download_)) {
     return l10n_util::GetStringUTF16(IDS_CONTINUE_EXTENSION_DOWNLOAD);
   } else {
     return l10n_util::GetStringUTF16(IDS_CONFIRM_DOWNLOAD);