Revert of Support device scale factor test with popups in LayoutTest

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 4670da536adc29173249c1bd741ed19880772b2a..b486959bd27b543df4702eb5c968b3a0e70e856c 100644
--- a/content/shell/renderer/layout_test/blink_test_runner.h
+++ b/content/shell/renderer/layout_test/blink_test_runner.h
@@ -150,8 +150,6 @@ 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();
 
@@ -201,8 +199,6 @@ class BlinkTestRunner : public RenderViewObserver,
   scoped_ptr<LeakDetector> leak_detector_;
   bool needs_leak_detector_;
 
-  float device_scale_factor_;
-
   DISALLOW_COPY_AND_ASSIGN(BlinkTestRunner);
 };