Disable "pause" item in context menu for "Save Page As..." downloads.

BUG=618624

Review-Url: https://codereview.chromium.org/2623613009
Cr-Commit-Position: refs/heads/master@{#442740}

chrome/browser/download/download_commands.cc

@@ -191,6 +191,7 @@ bool DownloadCommands::IsCommandEnabled(Command command) const {
       return !download_item_->IsDone();
     case PAUSE:
       return !download_item_->IsDone() && !download_item_->IsPaused() &&
+             !download_item_->IsSavePackageDownload() &&
              download_item_->GetState() == content::DownloadItem::IN_PROGRESS;
     case RESUME:
       return download_item_->CanResume() &&

chrome/browser/download/download_commands_unittest.cc

@@ -126,6 +126,11 @@ TEST_F(DownloadCommandsTest, PausedUnresumable) {
   EXPECT_FALSE(IsCommandEnabled(DownloadCommands::RESUME));
 }
 
+TEST_F(DownloadCommandsTest, CantPauseSavePackage) {
+  ON_CALL(item(), IsSavePackageDownload()).WillByDefault(Return(true));
+  EXPECT_FALSE(IsCommandEnabled(DownloadCommands::PAUSE));
+}
+
 TEST_F(DownloadCommandsTest, DoOpenWhenComplete) {
   // Open when complete.
   EXPECT_CALL(item(), OpenDownload()).Times(1);