Use parameterized tests to test multiple render text implementations.

ui/gfx/platform_font_win.h

 // Copyright (c) 2012 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_PLATFORM_FONT_WIN_H_
 #define UI_GFX_PLATFORM_FONT_WIN_H_
 
 #include <string>
 
 #include "base/compiler_specific.h"
@@ skipping 62 matching lines @@
 
   // Returns the GDI metrics for the font passed in.
   static void GetTextMetricsForFont(HDC hdc,
                                     HFONT font,
                                     TEXTMETRIC* text_metrics);
 
   // Returns the size of the font based on the font information passed in.
   static int GetFontSize(const LOGFONT& font_info);
 
  private:
-  FRIEND_TEST_ALL_PREFIXES(RenderTextTest, HarfBuzz_UniscribeFallback);
+  FRIEND_TEST_ALL_PREFIXES(RenderTextHarfBuzzTest, HarfBuzz_UniscribeFallback);
   FRIEND_TEST_ALL_PREFIXES(PlatformFontWinTest, Metrics_SkiaVersusGDI);
   FRIEND_TEST_ALL_PREFIXES(PlatformFontWinTest, DirectWriteFontSubstitution);
 
   ~PlatformFontWin() override;
 
   // Chrome text drawing bottoms out in the Windows GDI functions that take an
   // HFONT (an opaque handle into Windows). To avoid lots of GDI object
   // allocation and destruction, Font indirectly refers to the HFONT by way of
   // an HFontRef. That is, every Font has an HFontRef, which has an HFONT.
   //
@@ skipping 27 matching lines @@
 
     // Returns the average character width in dialog units.
     int GetDluBaseX();
 
     // Helper to return the average character width using the text extent
     // technique mentioned here. http://support.microsoft.com/kb/125681.
     static int GetAverageCharWidthInDialogUnits(HFONT gdi_font);
 
    private:
     friend class base::RefCounted<HFontRef>;
-    FRIEND_TEST_ALL_PREFIXES(RenderTextTest, HarfBuzz_UniscribeFallback);
+    FRIEND_TEST_ALL_PREFIXES(RenderTextHarfBuzzTest,
+                             HarfBuzz_UniscribeFallback);
     FRIEND_TEST_ALL_PREFIXES(PlatformFontWinTest, Metrics_SkiaVersusGDI);
     FRIEND_TEST_ALL_PREFIXES(PlatformFontWinTest, DirectWriteFontSubstitution);
 
     ~HFontRef();
 
     const HFONT hfont_;
     const int font_size_;
     const int height_;
     const int baseline_;
     const int cap_height_;
@@ skipping 65 matching lines @@
 
 // Returns the family name for the |IDWriteFont| interface passed in.
 // The family name is returned in the |family_name| parameter.
 // Returns S_OK on success.
 HRESULT GetFamilyNameFromDirectWriteFont(IDWriteFont* dwrite_font,
                                          base::string16* family_name);
 
 }  // namespace gfx
 
 #endif  // UI_GFX_PLATFORM_FONT_WIN_H_