Add LLVM fuzzer: QCMS color space and color transform

testing/libfuzzer/fuzzers/BUILD.gn

Index: testing/libfuzzer/fuzzers/BUILD.gn
diff --git a/testing/libfuzzer/fuzzers/BUILD.gn b/testing/libfuzzer/fuzzers/BUILD.gn
index 6b001ef01d6b82eb0e7167df8c522c455918f1c8..faaf5ebe8ffadb24327f7733be97f271e9f6b6d2 100644
--- a/testing/libfuzzer/fuzzers/BUILD.gn
+++ b/testing/libfuzzer/fuzzers/BUILD.gn
@@ -10,6 +10,9 @@ import("//testing/libfuzzer/fuzzer_test.gni")
 
 # root BUILD depends on this target. Needed for package discovery
 group("fuzzers") {
+  deps = [
+    "//third_party/qcms:fuzzers",

[Oliver Chang, 2017/04/11 19:46:47]

chiming in here. is this explicit dependency necessary (i.e. is the fuzzer_test
discoverable from the root BUILD.gn anyway)?

If the dependency is necessary, then the convention is to put this in the root
BUILD.gn instead here: 

https://chromium.googlesource.com/chromium/src/+/b87f01f54ba47ace1ddf35476a91...

[Noel Gordon, 2017/04/12 00:13:57]

Ok, moved it there.

+  ]
 }
 
 fuzzer_test("empty_fuzzer") {