Reland: Add hpack utilities and perftests to net GN

BUILD.gn

Index: BUILD.gn
diff --git a/BUILD.gn b/BUILD.gn
index 7082af0c6a93877db9abd129d014a9bcc131d494..e033e94ba70b7629350f1f82f07a3b1b3ec0c9da 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -62,6 +62,10 @@ group("gn_all") {
     "//media/cast:cast_unittests",
     "//mojo",
     "//mojo/common:mojo_common_unittests",
+    "//net:hpack_example_generator",
+    "//net:hpack_fuzz_mutator",
+    "//net:hpack_fuzz_wrapper",
+    "//net:net_perftests",
     "//net:net_unittests",
     "//ppapi:ppapi_unittests",
     "//ppapi/examples",  # TODO(GYP): What's the GYP equivalent?
@@ -189,6 +193,10 @@ group("gn_all") {
       "//google_apis/gcm:gcm_unit_tests",
       "//ipc:ipc_tests",  # TODO(GYP) ??
       "//jingle:jingle_unittests",  # TODO(GYP) ??
+      "//net:hpack_example_generator",
+      "//net:hpack_fuzz_mutator",
+      "//net:hpack_fuzz_wrapper",
+      "//net:net_perftests",
       "//net:net_unittests",
       "//ppapi/examples",
       "//third_party/pdfium/samples:pdfium_test",