Add LLVM fuzzer: QCMS color space and color transform

third_party/qcms/BUILD.gn

Index: third_party/qcms/BUILD.gn
diff --git a/third_party/qcms/BUILD.gn b/third_party/qcms/BUILD.gn
index 1183569beb9f32776c4d27f5049305bd0730dcab..183ae43d6812500062c2c63d17fceab04b1979dc 100644
--- a/third_party/qcms/BUILD.gn
+++ b/third_party/qcms/BUILD.gn
@@ -2,6 +2,8 @@
 # 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" ]
 }
@@ -48,6 +50,23 @@ static_library("qcms") {
   }
 }
 
+# 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") {