ScriptContextSetTest should close the main frame before finishing the test

ScriptContextSetTest should close the main frame and the webview, and then
collect garbage in Oilpan's heap before finishing the test.
Otherwise, the resources retained by the main frame are reported as leaking
on LSan builds.

BUG=497658

Review URL: https://codereview.chromium.org/1210513002

Cr-Commit-Position: refs/heads/master@{#336321}

1 files changed, 33 insertions, 0 deletions

diff --git a/extensions/renderer/scoped_web_frame.h b/extensions/renderer/scoped_web_frame.h
new file mode 100644
index 0000000..7950552
--- /dev/null
+++ b/extensions/renderer/scoped_web_frame.h
@@ -0,0 +1,33 @@
+// 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.
+
+#ifndef SCOPED_WEB_FRAME_H_
+#define SCOPED_WEB_FRAME_H_
+
+#include "third_party/WebKit/public/web/WebLocalFrame.h"
+#include "third_party/WebKit/public/web/WebView.h"
+
+namespace extensions {
+
+// ScopedWebFrame is a class to create a dummy webview and frame for testing.
+// The dymmy webview and frame will be destructed when the scope exits.
+class ScopedWebFrame {
+public:
+  ScopedWebFrame();
+  ~ScopedWebFrame();
+
+  blink::WebLocalFrame* frame() { return frame_; }
+
+private:
+  // The webview and the frame are kept alive by the ScopedWebFrame
+  // because they are not destructed unless ~ScopedWebFrame explicitly
+  // closes the webview and the frame.
+  blink::WebView* view_;
+  blink::WebLocalFrame* frame_;
+  DISALLOW_COPY_AND_ASSIGN(ScopedWebFrame);
+};
+
+}  // namespace extensions
+
+#endif  // SCOPED_WEB_FRAME_H_