Initialize RWHV with default bounds rather than only size

content/browser/renderer_host/render_widget_host_view_android.h

Index: content/browser/renderer_host/render_widget_host_view_android.h
diff --git a/content/browser/renderer_host/render_widget_host_view_android.h b/content/browser/renderer_host/render_widget_host_view_android.h
index 43a27e1616e4905bd6629711b40b0db406631b13..7cdf6d797a712d8b2812be137345056b6fd6e62f 100644
--- a/content/browser/renderer_host/render_widget_host_view_android.h
+++ b/content/browser/renderer_host/render_widget_host_view_android.h
@@ -360,8 +360,8 @@ class CONTENT_EXPORT RenderWidgetHostViewAndroid
   // This will always be NULL if |content_view_core_| is NULL.
   std::unique_ptr<ui::TouchSelectionController> selection_controller_;
 
-  // Size to use if we have no backing ContentViewCore
-  gfx::Size default_size_;
+  // Bounds to use if we have no backing ContentViewCore
+  gfx::Rect default_bounds_;
 
   const bool using_browser_compositor_;
   std::unique_ptr<SynchronousCompositorHost> sync_compositor_;