Added support for multiple urls in the component updater.

chrome/browser/component_updater/test/crx_downloader_unittest.cc

Index: chrome/browser/component_updater/test/crx_downloader_unittest.cc
diff --git a/chrome/browser/component_updater/test/crx_downloader_unittest.cc b/chrome/browser/component_updater/test/crx_downloader_unittest.cc
index ba4415cea840a0e60c4a038b4da1cbbe8204695d..42a5d2e441445551e3ff4a0a81d4ddf99345a368 100644
--- a/chrome/browser/component_updater/test/crx_downloader_unittest.cc
+++ b/chrome/browser/component_updater/test/crx_downloader_unittest.cc
@@ -104,7 +104,8 @@ void CrxDownloaderTest::TearDown() {
 }
 
 void CrxDownloaderTest::Quit() {
-  quit_closure_.Run();
+  if (!quit_closure_.is_null())
+    quit_closure_.Run();
 }
 
 void CrxDownloaderTest::DownloadComplete(
@@ -133,6 +134,18 @@ void CrxDownloaderTest::RunThreadsUntilIdle() {
   base::RunLoop().RunUntilIdle();
 }
 
+// Tests that starting a download without a url results in an error.
+TEST_F(CrxDownloaderTest, NoUrl) {
+  std::vector<GURL> urls;
+  crx_downloader_->StartDownload(urls);
+
+  RunThreadsUntilIdle();
+  EXPECT_EQ(-1, error_);
+  EXPECT_EQ(kExpectedContext, crx_context_);
+
+  EXPECT_EQ(1, num_calls_);
+}
+
 // Tests that downloading from one url is successful.
 TEST_F(CrxDownloaderTest, OneUrl) {
   const GURL expected_crx_url =