Add targets to the Fuchsia ARM64 builder.

The builder was brought up with just base_unittests, but we now have
most of our current set of targets compiling for ARM64 as well.

headless_shell, content_unittests, media_unittests and skia_unittests
are not yet built, due to a dependency on third_party/opus, which is
currently broken.

Bug: 772031, 775272
Change-Id: I67996585207793243e1bcc900ad89ae4014d5385
Reviewed-on: https://chromium-review.googlesource.com/723582Reviewed-by: Scott Graham <scottmg@chromium.org>
Reviewed-by: John Budorick <jbudorick@chromium.org>
Commit-Queue: Wez <wez@chromium.org>
Cr-Commit-Position: refs/heads/master@{#509550}

testing/buildbot/chromium.fyi.json

@@ -12572,7 +12572,18 @@
   },
   "Fuchsia ARM64": {
     "additional_compile_targets": [
-      "base_unittests"
+      "base_unittests",
+      "crypto_unittests",
+      "gl_unittests",
+      "ipc_tests",
+      "mojo_common_unittests",
+      "mojo_js_unittests",
+      "mojo_public_bindings_unittests",
+      "mojo_public_system_unittests",
+      "mojo_system_unittests",
+      "net_unittests",
+      "service_manager_unittests",
+      "ui_base_unittests"
     ]
   },
   "Headless Linux (dbg)": {