Add request header on gdata operation for testing ETag match.

chrome/browser/chromeos/extensions/external_filesystem_apitest.cc

Index: chrome/browser/chromeos/extensions/external_filesystem_apitest.cc
diff --git a/chrome/browser/chromeos/extensions/external_filesystem_apitest.cc b/chrome/browser/chromeos/extensions/external_filesystem_apitest.cc
index 0d6df25c8d2ef5aea1e2bc1eec0b024f1c47d7ca..71c555567bac67ddd3a76699cdaa596c1f3141e9 100644
--- a/chrome/browser/chromeos/extensions/external_filesystem_apitest.cc
+++ b/chrome/browser/chromeos/extensions/external_filesystem_apitest.cc
@@ -148,7 +148,7 @@ ACTION_P(MockDownloadFileCallback, status) {
       content::BrowserThread::FILE,
       FROM_HERE,
       base::Bind(&CreateFileWithContent, arg1, kTestFileContent),
-      base::Bind(arg3, status, arg2, arg1)));
+      base::Bind(arg4, status, arg2, arg1)));
 }
 
 }  // namespace
@@ -392,7 +392,7 @@ IN_PROC_BROWSER_TEST_F(RemoteFileSystemExtensionApiTest,
   // GetDocumentEntry mock implementation.
   EXPECT_CALL(*mock_drive_service_,
               DownloadFile(_, _, GURL("https://file_content_url_changed"),
-                           _, _))
+                           _, _, _))
       .WillOnce(MockDownloadFileCallback(gdata::HTTP_SUCCESS));
 
   // On exit, all operations in progress should be cancelled.
@@ -433,7 +433,7 @@ IN_PROC_BROWSER_TEST_F(RemoteFileSystemExtensionApiTest, ContentSearch) {
   // GetDocumentEntry mock implementation.
   EXPECT_CALL(*mock_drive_service_,
               DownloadFile(_, _, GURL("https://file_content_url_changed"),
-                           _, _))
+                           _, _, _))
       .WillOnce(MockDownloadFileCallback(gdata::HTTP_SUCCESS));
 
   // On exit, all operations in progress should be cancelled.