Have ScopedClipboardWriter and Clipboard::WriteObjects take a buffer parameter.

chrome/browser/ui/pdf/pdf_browsertest.cc

Index: chrome/browser/ui/pdf/pdf_browsertest.cc
diff --git a/chrome/browser/ui/pdf/pdf_browsertest.cc b/chrome/browser/ui/pdf/pdf_browsertest.cc
index d1877ff4ef41c261d50c390fc1c2f7ba7b642919..290ea2fd666408f5010aeaadf1369a3d36cabbc1 100644
--- a/chrome/browser/ui/pdf/pdf_browsertest.cc
+++ b/chrome/browser/ui/pdf/pdf_browsertest.cc
@@ -269,7 +269,7 @@ IN_PROC_BROWSER_TEST_F(PDFBrowserTest, MAYBE_FindAndCopy) {
   ui::Clipboard::ObjectMapParams params;
   params.push_back(std::vector<char>());
   objects[ui::Clipboard::CBF_TEXT] = params;
-  clipboard.WriteObjects(objects);
+  clipboard.WriteObjects(ui::Clipboard::BUFFER_STANDARD, objects);
 
   browser()->GetSelectedWebContents()->GetRenderViewHost()->Copy();
   ASSERT_NO_FATAL_FAILURE(WaitForResponse());