Implement webview.captureVisibleRegion()

content/browser/renderer_host/render_widget_host_view_android.cc

Index: content/browser/renderer_host/render_widget_host_view_android.cc
diff --git a/content/browser/renderer_host/render_widget_host_view_android.cc b/content/browser/renderer_host/render_widget_host_view_android.cc
index 8b52e6b82c8d723bb996be39900b6bc717f75384..facac1a33ce615c7a623c89484d7f3af4b441afa 100644
--- a/content/browser/renderer_host/render_widget_host_view_android.cc
+++ b/content/browser/renderer_host/render_widget_host_view_android.cc
@@ -1966,6 +1966,11 @@ void RenderWidgetHostViewAndroid::
                                  callback, std::move(result));
 }
 
+// TODO(wjmaclean): There is significant overlap between
+// PrepareTextureCopyOutputResult and CopyFromCompositingSurfaceFinished in
+// this file, and the versions in surface_utils.cc. They should
+// be merged. See https://crbug.com/582955
+
 // static
 void RenderWidgetHostViewAndroid::PrepareTextureCopyOutputResult(
     const gfx::Size& dst_size_in_pixel,