Move existing kSitePerProcess checks to a policy-oracle object

content/public/common/browser_plugin_guest_mode.cc

Index: content/public/common/browser_plugin_guest_mode.cc
diff --git a/content/public/common/browser_plugin_guest_mode.cc b/content/public/common/browser_plugin_guest_mode.cc
new file mode 100644
index 0000000000000000000000000000000000000000..f9181c4d25c6f8cf359f28a5976f819c02d041f8
--- /dev/null
+++ b/content/public/common/browser_plugin_guest_mode.cc
@@ -0,0 +1,18 @@
+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "content/public/common/browser_plugin_guest_mode.h"
+
+#include "base/command_line.h"
+#include "content/public/common/content_switches.h"
+
+namespace content {
+
+// static
+bool BrowserPluginGuestMode::UseCrossProcessFramesForGuests() {
+  return base::CommandLine::ForCurrentProcess()->HasSwitch(
+      switches::kSitePerProcess);
+}
+
+}  // namespace content