RenderWidget::windowRect and viewRect should apply device emulation transform.

content/renderer/devtools/render_widget_screen_metrics_emulator.h

Index: content/renderer/devtools/render_widget_screen_metrics_emulator.h
diff --git a/content/renderer/devtools/render_widget_screen_metrics_emulator.h b/content/renderer/devtools/render_widget_screen_metrics_emulator.h
index 9d12cd1addae5a15c2a3d543f6d455dab5a72b1d..dad32ea13cf0e191c80422fdae66cdfbffa2b692 100644
--- a/content/renderer/devtools/render_widget_screen_metrics_emulator.h
+++ b/content/renderer/devtools/render_widget_screen_metrics_emulator.h
@@ -24,7 +24,7 @@ struct ContextMenuParams;
 // RenderWidget. This includes resizing, placing view on the screen at desired
 // position, changing device scale factor, and scaling down the whole
 // widget if required to fit into the browser window.
-class RenderWidgetScreenMetricsEmulator {
+class CONTENT_EXPORT RenderWidgetScreenMetricsEmulator {
  public:
   RenderWidgetScreenMetricsEmulator(
       RenderWidgetScreenMetricsEmulatorDelegate* delegate,