Add LLVM fuzzer: QCMS color space and color transform

third_party/qcms/BUILD.gn

 # 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.
 
+import("//testing/libfuzzer/fuzzer_test.gni")
+
 config("qcms_config") {
   include_dirs = [ "src" ]
 }
 
 disable_qcms = false
 
 static_library("qcms") {
   if (disable_qcms) {
     sources = [
       "src/empty.c",
@@ skipping 26 matching lines @@
 
   if (is_win) {
     cflags = [
       "/wd4018",  # Signed/unsigned mismatch in comparison.
       "/wd4056",  # Overflow in floating-point constant arithmetic (INFINITY).
       "/wd4756",  # Overflow in constant arithmetic (INFINITY).
     ]
   }
 }
 
+# fuzzers BUILD depends on this target. Needed for package discovery
+group("fuzzers") {
+}
+
+fuzzer_test("qcms_color_space_fuzzer") {
+  sources = [
+    "//testing/libfuzzer/fuzzers/color_space_data.h",
+    "qcms_color_space_fuzzer.cc",
+  ]
+  deps = [
+    ":qcms",
+    "//base",
+  ]
+  dict = "//testing/libfuzzer/fuzzers/dicts/icc.dict"
+  libfuzzer_options = [ "max_len=4194304" ]
+}
+
 if (!disable_qcms) {
   executable("qcms_tests") {
     if (current_cpu == "x86" || current_cpu == "x64") {
       defines = [ "SSE2_ENABLE" ]
     }
     sources = [
       "src/tests/qcms_test_internal_srgb.c",
       "src/tests/qcms_test_main.c",
       "src/tests/qcms_test_munsell.c",
       "src/tests/qcms_test_ntsc_gamut.c",
       "src/tests/qcms_test_output_trc.c",
       "src/tests/qcms_test_tetra_clut_rgba.c",
       "src/tests/qcms_test_util.c",
     ]
 
     deps = [
       "//build/config/sanitizers:deps",
       "//build/win:default_exe_manifest",
       "//third_party/qcms",
     ]
 
     configs -= [ "//build/config/compiler:chromium_code" ]
     configs += [ "//build/config/compiler:no_chromium_code" ]
     public_configs = [ ":qcms_config" ]
   }
 }