Don't test Cmd+Alt+v in the Omnibox on macOS Sierra

chrome/browser/ui/omnibox/omnibox_view_browsertest.cc

Index: chrome/browser/ui/omnibox/omnibox_view_browsertest.cc
diff --git a/chrome/browser/ui/omnibox/omnibox_view_browsertest.cc b/chrome/browser/ui/omnibox/omnibox_view_browsertest.cc
index 60e5b315cb92a5bf39b57045a3ea64f700561713..262ddaba21b01031100bda3ed2cd7ed3c2a1f87f 100644
--- a/chrome/browser/ui/omnibox/omnibox_view_browsertest.cc
+++ b/chrome/browser/ui/omnibox/omnibox_view_browsertest.cc
@@ -54,6 +54,10 @@
 #include "ui/events/keycodes/keyboard_codes.h"
 #include "ui/gfx/geometry/point.h"
 
+#if defined(OS_MACOSX)
+#include "base/mac/mac_util.h"
+#endif
+
 using base::ASCIIToUTF16;
 using base::UTF16ToUTF8;
 using base::Time;
@@ -1634,10 +1638,20 @@ IN_PROC_BROWSER_TEST_F(OmniboxViewTest, Paste) {
   EXPECT_EQ(ASCIIToUTF16("ab123cd"), omnibox_view->GetText());
   EXPECT_TRUE(popup_model->IsOpen());
 
-  // Ctrl/Cmd+Alt+V should not paste.
-  ASSERT_NO_FATAL_FAILURE(
-      SendKey(ui::VKEY_V, kCtrlOrCmdMask | ui::EF_ALT_DOWN));
-  EXPECT_EQ(ASCIIToUTF16("ab123cd"), omnibox_view->GetText());
+  bool run_alt_paste_test = true;
+#if defined(OS_MACOSX) && MAC_OS_X_VERSION_MIN_REQUIRED == MAC_OS_X_VERSION_10_7
+  // On macOS 10.12 Sierra Cmd+Alt+v actually does paste due to an OS bug. In
+  // addition, the synthetic test event causes a segfault inside AppKit. A real,
+  // keyboard-generated event does not crash (but incorrectly pastes). Revisit
+  // this when bumping the deployment target. See http://crbug.com/629595.
+  run_alt_paste_test = !base::mac::IsOSLaterThanElCapitan_DontCallThis();
+#endif
+  if (run_alt_paste_test) {
+    // Ctrl/Cmd+Alt+V should not paste.
+    ASSERT_NO_FATAL_FAILURE(
+        SendKey(ui::VKEY_V, kCtrlOrCmdMask | ui::EF_ALT_DOWN));
+    EXPECT_EQ(ASCIIToUTF16("ab123cd"), omnibox_view->GetText());
+  }
   // TODO(msw): Test that AltGr+V does not paste.
 }