Revert "Revert of Support device scale factor test with popups in LayoutTest (patchset #2 id:40001 …

content/shell/renderer/layout_test/blink_test_runner.h

Index: content/shell/renderer/layout_test/blink_test_runner.h
diff --git a/content/shell/renderer/layout_test/blink_test_runner.h b/content/shell/renderer/layout_test/blink_test_runner.h
index 8ba9d7e400102f5e78e88c857a139ad8cb473bae..9e19d6096622589bbd8fdf40c07d8f02e630fdbb 100644
--- a/content/shell/renderer/layout_test/blink_test_runner.h
+++ b/content/shell/renderer/layout_test/blink_test_runner.h
@@ -151,6 +151,8 @@ class BlinkTestRunner : public RenderViewObserver,
     blink::WebLocalFrame* frame,
     const blink::WebPluginParams& params) override;
   void OnWebTestProxyBaseDestroy(test_runner::WebTestProxyBase* proxy) override;
+  blink::WebPoint ConvertDIPToNative(
+      const blink::WebPoint& point_in_dip) const override;
 
   void Reset();
 
@@ -200,6 +202,8 @@ class BlinkTestRunner : public RenderViewObserver,
   scoped_ptr<LeakDetector> leak_detector_;
   bool needs_leak_detector_;
 
+  float device_scale_factor_;
+
   DISALLOW_COPY_AND_ASSIGN(BlinkTestRunner);
 };