Replace 'typedef xxxxx INHERITED' with 'using INHERITED = xxxx;'.

Mechanically updated via Xcode "Replace Regular Expression":

  typedef (.*) INHERITED;
    -->
  using INHERITED = $1;

The ClangTidy approach generated an even larger CL which would have
required a significant amount of hand-tweaking to be usable.

Change-Id: I671dc9d9efdf6d60151325c8d4d13fad7e10a15b
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/314999
Commit-Queue: Mike Klein <mtklein@google.com>
Reviewed-by: Mike Klein <mtklein@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
diff --git a/samplecode/SampleThinAA.cpp b/samplecode/SampleThinAA.cpp
index 5608acb..0a5a25a 100644
--- a/samplecode/SampleThinAA.cpp
+++ b/samplecode/SampleThinAA.cpp
@@ -64,7 +64,7 @@
 private:
     RectRenderer() {}
 
-    typedef ShapeRenderer INHERITED;
+    using INHERITED = ShapeRenderer;
 };
 
 class PathRenderer : public ShapeRenderer {
@@ -149,7 +149,7 @@
             : fDepth(depth)
             , fHairline(hairline) {}
 
-    typedef ShapeRenderer INHERITED;
+    using INHERITED = ShapeRenderer;
 };
 
 class OffscreenShapeRenderer : public ShapeRenderer {
@@ -237,7 +237,7 @@
             , fRenderer(std::move(renderer))
             , fSupersampleFactor(supersample) { }
 
-    typedef ShapeRenderer INHERITED;
+    using INHERITED = ShapeRenderer;
 };
 
 class ThinAASample : public Sample {
@@ -535,7 +535,7 @@
         canvas->translate(0.f, 8.f * ShapeRenderer::kTileHeight + 20.f);
     }
 
-    typedef Sample INHERITED;
+    using INHERITED = Sample;
 };
 
 //////////////////////////////////////////////////////////////////////////////