[Skia] Eagerly flush text

Flushes text eagerly to Skia. This has no effect on the output, but
demonstrates that we can switch to eager flushing for both paths and
text without negative effects, before we get rid of lazy flushing
entirely.

Bug: pdfium:1963
Change-Id: Iddb5cb65e3a74e03398aae7bd6fb6120b177cc67
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/104396
Commit-Queue: K. Moon <kmoon@chromium.org>
Reviewed-by: Nigi <nigi@chromium.org>
diff --git a/core/fxge/skia/fx_skia_device.cpp b/core/fxge/skia/fx_skia_device.cpp
index a73189b..171c3fc 100644
--- a/core/fxge/skia/fx_skia_device.cpp
+++ b/core/fxge/skia/fx_skia_device.cpp
@@ -1030,6 +1030,7 @@
     }
 
     // TODO(crbug.com/pdfium/1963): Simplify code assuming eager flushing.
+    Flush();
     return true;
   }