Use parameterized tests to test multiple render text implementations.

ui/gfx/render_text_harfbuzz.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef UI_GFX_RENDER_TEXT_HARFBUZZ_H_
 #define UI_GFX_RENDER_TEXT_HARFBUZZ_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 161 matching lines @@
   size_t DisplayIndexToTextIndex(size_t index) override;
   bool IsValidCursorIndex(size_t index) override;
   void OnLayoutTextAttributeChanged(bool text_changed) override;
   void OnDisplayTextAttributeChanged() override;
   void EnsureLayout() override;
   void DrawVisualText(internal::SkiaTextRenderer* renderer) override;
 
  private:
   friend class test::RenderTextTestApi;
 
-  FRIEND_TEST_ALL_PREFIXES(RenderTextTest, Multiline_HorizontalAlignment);
-  FRIEND_TEST_ALL_PREFIXES(RenderTextTest, Multiline_NormalWidth);
-  FRIEND_TEST_ALL_PREFIXES(RenderTextTest, Multiline_WordWrapBehavior);
-  FRIEND_TEST_ALL_PREFIXES(RenderTextTest, HarfBuzz_RunDirection);
-  FRIEND_TEST_ALL_PREFIXES(RenderTextTest, HarfBuzz_HorizontalPositions);
-  FRIEND_TEST_ALL_PREFIXES(RenderTextTest,
-                           HarfBuzz_TextPositionWithFractionalSize);
-  FRIEND_TEST_ALL_PREFIXES(RenderTextTest, HarfBuzz_BreakRunsByUnicodeBlocks);
-  FRIEND_TEST_ALL_PREFIXES(RenderTextTest, HarfBuzz_BreakRunsByEmoji);
-  FRIEND_TEST_ALL_PREFIXES(RenderTextTest, HarfBuzz_BreakRunsByAscii);
-  FRIEND_TEST_ALL_PREFIXES(RenderTextTest, HarfBuzz_SubglyphGraphemeCases);
-  FRIEND_TEST_ALL_PREFIXES(RenderTextTest, HarfBuzz_SubglyphGraphemePartition);
-  FRIEND_TEST_ALL_PREFIXES(RenderTextTest, HarfBuzz_NonExistentFont);
-  FRIEND_TEST_ALL_PREFIXES(RenderTextTest, HarfBuzz_UniscribeFallback);
-  FRIEND_TEST_ALL_PREFIXES(RenderTextTest, HarfBuzz_UnicodeFallback);
-  FRIEND_TEST_ALL_PREFIXES(RenderTextTest, Multiline_LineBreakerBehavior);
-  FRIEND_TEST_ALL_PREFIXES(RenderTextTest,
+  FRIEND_TEST_ALL_PREFIXES(RenderTextHarfBuzzTest,
+                           Multiline_HorizontalAlignment);
+  FRIEND_TEST_ALL_PREFIXES(RenderTextHarfBuzzTest, Multiline_NormalWidth);
+  FRIEND_TEST_ALL_PREFIXES(RenderTextHarfBuzzTest, Multiline_WordWrapBehavior);
+  FRIEND_TEST_ALL_PREFIXES(RenderTextHarfBuzzTest, HarfBuzz_RunDirection);
+  FRIEND_TEST_ALL_PREFIXES(RenderTextHarfBuzzTest,
+                           HarfBuzz_HorizontalPositions);
+  FRIEND_TEST_ALL_PREFIXES(RenderTextHarfBuzzTest,
+                           HarfBuzz_BreakRunsByUnicodeBlocks);
+  FRIEND_TEST_ALL_PREFIXES(RenderTextHarfBuzzTest, HarfBuzz_BreakRunsByEmoji);
+  FRIEND_TEST_ALL_PREFIXES(RenderTextHarfBuzzTest, HarfBuzz_BreakRunsByAscii);
+  FRIEND_TEST_ALL_PREFIXES(RenderTextHarfBuzzTest,
+                           HarfBuzz_SubglyphGraphemeCases);
+  FRIEND_TEST_ALL_PREFIXES(RenderTextHarfBuzzTest,
+                           HarfBuzz_SubglyphGraphemePartition);
+  FRIEND_TEST_ALL_PREFIXES(RenderTextHarfBuzzTest, HarfBuzz_NonExistentFont);
+  FRIEND_TEST_ALL_PREFIXES(RenderTextHarfBuzzTest, HarfBuzz_UniscribeFallback);
+  FRIEND_TEST_ALL_PREFIXES(RenderTextHarfBuzzTest, HarfBuzz_UnicodeFallback);
+  FRIEND_TEST_ALL_PREFIXES(RenderTextHarfBuzzTest,
+                           Multiline_LineBreakerBehavior);
+  FRIEND_TEST_ALL_PREFIXES(RenderTextHarfBuzzTest,
                            Multiline_SurrogatePairsOrCombiningChars);
-  FRIEND_TEST_ALL_PREFIXES(RenderTextTest, Multiline_ZeroWidthChars);
+  FRIEND_TEST_ALL_PREFIXES(RenderTextHarfBuzzTest, Multiline_ZeroWidthChars);
 
   // Specify the width of a glyph for test. The width of glyphs is very
   // platform-dependent and environment-dependent. Otherwise multiline test
   // will become really flaky.
   void set_glyph_width_for_test(float test_width) {
     glyph_width_for_test_ = test_width;
   }
 
   // Return the run index that contains the argument; or the length of the
   // |runs_| vector if argument exceeds the text length or width.
@@ skipping 68 matching lines @@
 
   // Fixed width of glyphs. This should only be set in test environments.
   float glyph_width_for_test_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderTextHarfBuzz);
 };
 
 }  // namespace gfx
 
 #endif  // UI_GFX_RENDER_TEXT_HARFBUZZ_H_