Add flags for v2 sandbox to Chrome and Helper executable.

content/public/common/content_switches.cc

Index: content/public/common/content_switches.cc
diff --git a/content/public/common/content_switches.cc b/content/public/common/content_switches.cc
index 22ad5399b729a1f5f527512116801520b8d1c8f7..e4dedb93b2645100d7fdeaf7a34abeadd8702be6 100644
--- a/content/public/common/content_switches.cc
+++ b/content/public/common/content_switches.cc
@@ -1082,6 +1082,13 @@ const char kIpcDumpDirectory[] = "ipc-dump-directory";
 const char kIpcFuzzerTestcase[] = "ipc-fuzzer-testcase";
 #endif
 
+#if defined(OS_MACOSX)
+// Enable the V2 sandbox during the helper executable initialization.
+const char kEnableV2Sandbox[] = "v2-sandbox";
+// Indicate that the V2 sandbox has been enabled.
+const char kV2SandboxedEnabled[] = "v2-sandbox-enabled";
+#endif  // defined(OS_MACOSX)
+
 // Don't dump stuff here, follow the same order as the header.
 
 }  // namespace switches