Added missing depenencies in chrome/services/media_gallery_util/public/cpp

Bug: 832591
Change-Id: I8d104a7e0ede58f20d71bb5ce00f8b398cf8e28b
Reviewed-on: https://chromium-review.googlesource.com/1012023Reviewed-by: Lei Zhang <thestig@chromium.org>
Commit-Queue: Michal Pichlinski <mpichlinski@opera.com>
Cr-Commit-Position: refs/heads/master@{#550643}

chrome/services/media_gallery_util/public/cpp/BUILD.gn

@@ -15,6 +15,8 @@ source_set("cpp") {
   ]
 
   deps = [
+    "//media:media_buildflags",
+    "//net:buildflags",
     "//services/service_manager/public/cpp",
     "//third_party/boringssl",
     "//third_party/libyuv",