diff --git a/gfx/tests/gtest/TestSkipChars.cpp b/gfx/tests/gtest/TestSkipChars.cpp
deleted file mode 100644
index 491199523b8..00000000000
--- a/gfx/tests/gtest/TestSkipChars.cpp
+++ /dev/null
@@ -1,139 +0,0 @@
-/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-#include "gtest/gtest.h"
-
-#include "gfxSkipChars.h"
-
-static bool
-TestConstructor()
-{
-  gfxSkipChars skipChars;
-
-  EXPECT_TRUE(skipChars.GetOriginalCharCount() == 0) <<
-    "[1] Make sure the gfxSkipChars was properly initialized with constructor";
-
-  return true;
-}
-
-static bool
-TestLength()
-{
-  gfxSkipCharsBuilder builder;
-
-  builder.KeepChars(100);
-
-  EXPECT_TRUE(builder.GetCharCount() == 100) <<
-    "[1] Check length after keeping chars";
-
-  builder.SkipChars(50);
-
-  EXPECT_TRUE(builder.GetCharCount() == 150) <<
-    "[2] Check length after skipping chars";
-
-  builder.SkipChars(50);
-
-  EXPECT_TRUE(builder.GetCharCount() == 200) <<
-    "[3] Check length after skipping more chars";
-
-  builder.KeepChar();
-
-  EXPECT_TRUE(builder.GetCharCount() == 201) <<
-    "[4] Check length after keeping a final char";
-
-  return true;
-}
-
-static bool
-TestIterator()
-{
-  // Test a gfxSkipChars that starts with kept chars
-  gfxSkipCharsBuilder builder1;
-
-  builder1.KeepChars(9);
-  builder1.SkipChar();
-  builder1.KeepChars(9);
-  builder1.SkipChar();
-  builder1.KeepChars(9);
-
-  gfxSkipChars skipChars;
-  skipChars.TakeFrom(&builder1);
-
-  EXPECT_TRUE(skipChars.GetOriginalCharCount() == 29) <<
-    "[1] Check length";
-
-  gfxSkipCharsIterator iter(skipChars);
-
-  EXPECT_TRUE(iter.GetOriginalOffset() == 0) <<
-    "[2] Check initial original offset";
-  EXPECT_TRUE(iter.GetSkippedOffset() == 0) <<
-    "[3] Check initial skipped offset";
-
-  uint32_t expectSkipped1[] =
-  {  0,  1,  2,  3,  4,  5,  6,  7,  8,  9,
-     9, 10, 11, 12, 13, 14, 15, 16, 17, 18,
-    18, 19, 20, 21, 22, 23, 24, 25, 26, 27 };
-
-  for (uint32_t i = 0; i < mozilla::ArrayLength(expectSkipped1); i++) {
-    EXPECT_TRUE(iter.ConvertOriginalToSkipped(i) == expectSkipped1[i]) <<
-      "[4] Check mapping of original to skipped for " << i;
-  }
-
-  uint32_t expectOriginal1[] =
-  {  0,  1,  2,  3,  4,  5,  6,  7,  8,
-    10, 11, 12, 13, 14, 15, 16, 17, 18,
-    20, 21, 22, 23, 24, 25, 26, 27, 28 };
-
-  for (uint32_t i = 0; i < mozilla::ArrayLength(expectOriginal1); i++) {
-    EXPECT_TRUE(iter.ConvertSkippedToOriginal(i) == expectOriginal1[i]) <<
-      "[5] Check mapping of skipped to original for " << i;
-  }
-
-  // Test a gfxSkipChars that starts with skipped chars
-  gfxSkipCharsBuilder builder2;
-
-  builder2.SkipChars(9);
-  builder2.KeepChar();
-  builder2.SkipChars(9);
-  builder2.KeepChar();
-  builder2.SkipChars(9);
-
-  skipChars.TakeFrom(&builder2);
-
-  EXPECT_TRUE(skipChars.GetOriginalCharCount() == 29) <<
-    "[6] Check length";
-
-  gfxSkipCharsIterator iter2(skipChars);
-
-  EXPECT_TRUE(iter2.GetOriginalOffset() == 0) <<
-    "[7] Check initial original offset";
-  EXPECT_TRUE(iter2.GetSkippedOffset() == 0) <<
-    "[8] Check initial skipped offset";
-
-  uint32_t expectSkipped2[] =
-  {  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
-     1,  1,  1,  1,  1,  1,  1,  1,  1,  1,
-     2,  2,  2,  2,  2,  2,  2,  2,  2,  2 };
-
-  for (uint32_t i = 0; i < mozilla::ArrayLength(expectSkipped2); i++) {
-    EXPECT_TRUE(iter2.ConvertOriginalToSkipped(i) == expectSkipped2[i]) <<
-      "[9] Check mapping of original to skipped for " << i;
-  }
-
-  uint32_t expectOriginal2[] = { 9, 19, 29 };
-
-  for (uint32_t i = 0; i < mozilla::ArrayLength(expectOriginal2); i++) {
-    EXPECT_TRUE(iter2.ConvertSkippedToOriginal(i) == expectOriginal2[i]) <<
-      "[10] Check mapping of skipped to original for " << i;
-  }
-
-  return true;
-}
-
-TEST(Gfx, gfxSkipChars) {
-  TestConstructor();
-  TestLength();
-  TestIterator();
-}
diff --git a/gfx/tests/gtest/moz.build b/gfx/tests/gtest/moz.build
index 73b983497eb..fe9c192b826 100644
--- a/gfx/tests/gtest/moz.build
+++ b/gfx/tests/gtest/moz.build
@@ -15,7 +15,6 @@ UNIFIED_SOURCES += [
     'TestColorNames.cpp',
     'TestLayers.cpp',
     'TestRegion.cpp',
-    'TestSkipChars.cpp',
     # Hangs on linux in ApplyGdkScreenFontOptions
     #'gfxFontSelectionTest.cpp',
     'TestTextures.cpp',