Fix gfx::Canvas::DrawStringRectWithHalo

ui/gfx/render_text.cc

Index: ui/gfx/render_text.cc
diff --git a/ui/gfx/render_text.cc b/ui/gfx/render_text.cc
index f2f691ee9e283f214f5606dc22edb72a7ecd425d..ff0de8a91607e43c872a0a07e10ab2ef1e3dd533 100644
--- a/ui/gfx/render_text.cc
+++ b/ui/gfx/render_text.cc
@@ -22,6 +22,7 @@
 #include "third_party/skia/include/core/SkDrawLooper.h"
 #include "third_party/skia/include/core/SkTypeface.h"
 #include "third_party/skia/include/effects/SkGradientShader.h"
+#include "third_party/skia/include/effects/SkMorphologyImageFilter.h"
 #include "ui/gfx/canvas.h"
 #include "ui/gfx/geometry/insets.h"
 #include "ui/gfx/geometry/safe_integer_conversions.h"
@@ -255,6 +256,10 @@ void SkiaTextRenderer::SetShader(sk_sp<SkShader> shader) {
   paint_.setShader(std::move(shader));
 }
 
+void SkiaTextRenderer::SetHaloEffect() {
+  paint_.setImageFilter(SkDilateImageFilter::Make(1, 1, nullptr));
+}
+
 void SkiaTextRenderer::SetUnderlineMetrics(SkScalar thickness,
                                            SkScalar position) {
   underline_thickness_ = thickness;
@@ -830,6 +835,8 @@ void RenderText::Draw(Canvas* canvas) {
 
   if (!text().empty()) {
     internal::SkiaTextRenderer renderer(canvas);
+    if (halo_effect())
+      renderer.SetHaloEffect();
     DrawVisualText(&renderer);
   }