[Sheriff] Disable DragDropVirtualFiles due to flaky crash.

TBR=sadrul@chromium.org

Bug: 1020136
Change-Id: I978673a0da380eac20df2dea2fa8361b48341d9e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1893154Reviewed-by: Armando Miraglia <armax@chromium.org>
Commit-Queue: Armando Miraglia <armax@chromium.org>
Cr-Commit-Position: refs/heads/master@{#711222}

content/browser/web_contents/web_contents_view_aura_unittest.cc

@@ -314,7 +314,14 @@ TEST_F(WebContentsViewAuraTest, DragDropFilesOriginateFromRenderer) {
 #endif
 
 #if defined(OS_WIN)
-TEST_F(WebContentsViewAuraTest, DragDropVirtualFiles) {
+
+// Flaky crash on ASan: http://crbug.com/1020136
+#if defined(ADDRESS_SANITIZER)
+#define MAYBE_DragDropVirtualFiles DISABLED_DragDropVirtualFiles
+#else
+#define MAYBE_DragDropVirtualFiles DragDropVirtualFiles
+#endif
+TEST_F(WebContentsViewAuraTest, MAYBE_DragDropVirtualFiles) {
   WebContentsViewAura* view = GetView();
   auto data = std::make_unique<ui::OSExchangeData>();