Use GraphicsContextStateSaver::SaveIfNeeded in a few places

In TextPainterBase::UpdateGraphicsContext() there are two instances that
exactly matches the SaveIfNeeded() pattern. Replace.

Change-Id: I107a6db5880d7592560b0c759a677ce133ce4403
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2240858
Commit-Queue: Stephen Chenney <schenney@chromium.org>
Auto-Submit: Fredrik Söderquist <fs@opera.com>
Reviewed-by: Stephen Chenney <schenney@chromium.org>
Cr-Commit-Position: refs/heads/master@{#777395}

third_party/blink/renderer/core/paint/text_painter_base.cc

@@ -78,8 +78,7 @@ void TextPainterBase::UpdateGraphicsContext(
   if (text_style.stroke_width > 0) {
     TextDrawingModeFlags new_mode = mode | kTextModeStroke;
     if (mode != new_mode) {
-      if (!state_saver.Saved())
-        state_saver.Save();
+      state_saver.SaveIfNeeded();
       context.SetTextDrawingMode(new_mode);
       mode = new_mode;
     }
@@ -96,8 +95,7 @@ void TextPainterBase::UpdateGraphicsContext(
   }
 
   if (text_style.shadow) {
-    if (!state_saver.Saved())
-      state_saver.Save();
+    state_saver.SaveIfNeeded();
     context.SetDrawLooper(text_style.shadow->CreateDrawLooper(
         DrawLooperBuilder::kShadowIgnoresAlpha, text_style.current_color,
         horizontal));