Add fuzzer for OpenCV EMD implementation

This CL adds a fuzzer for the Chromium wrapper around the OpenCV
implementation. The Chromium wrapper provides it's own safety checks
before running the core EMD implementation from OpenCV, so it's
important to fuzz this API from within Chromium.

Bug: 1068616
Change-Id: I2369227414cab3b37053c2f7fcc1438070c2752f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2166582
Commit-Queue: Daniel Rubery <[email protected]>
Reviewed-by: Takuto Ikuta <[email protected]>
Reviewed-by: Bettina Dea <[email protected]>
Cr-Commit-Position: refs/heads/master@{#768070}
diff --git a/BUILD.gn b/BUILD.gn
index 3397fdd..91657a7 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -823,6 +823,9 @@
     "//third_party/pffft:pffft_benchmark",
     "//third_party/pffft:pffft_unittest",
   ]
+
+  # OpenCV
+  deps += [ "//third_party/opencv:opencv_emd_fuzzer" ]
 }
 
 if ((is_linux || is_win) && enable_remoting && !use_ozone) {