Create new sandbox policy for Cast

This new sandbox policy starts by adding these extra permissions:
* fuchsia.bluetooth.gatt.Server
* fuchsia.bluetooth.le.Peripheral
* fuchsia.wlan.server.Server

Bug: None
Test: None
Change-Id: I58c08b70bd86fa66858037c41c765677fb242beb
Reviewed-on: https://chromium-review.googlesource.com/c/1343520Reviewed-by: Wez <wez@chromium.org>
Reviewed-by: Luke Halliwell <halliwell@chromium.org>
Commit-Queue: Aidan Wolter <awolter@chromium.org>
Cr-Commit-Position: refs/heads/master@{#613736}

chromecast/BUILD.gn

@@ -461,7 +461,7 @@ if (is_fuchsia) {
   fuchsia_package("cast_shell_pkg") {
     binary = ":cast_shell"
     package_name_override = "cast_shell"
-    sandbox_policy = "//build/config/fuchsia/testing_sandbox_policy"
+    sandbox_policy = "//chromecast/cast_shell_sandbox_policy"
 
     if (chromecast_branding != "public") {
       deps = [

chromecast/cast_shell_sandbox_policy

+{
+  "features": [ "persistent-storage", "root-ssl-certificates", "system-temp",
+      "vulkan" ],
+  "dev": ["null", "zero"],
+  "services": [
+      "fuchsia.bluetooth.gatt.Server",
+      "fuchsia.bluetooth.le.Peripheral",
+      "fuchsia.fonts.Provider",
+      "fuchsia.media.Audio",
+      "fuchsia.mediacodec.CodecFactory",
+      "fuchsia.net.LegacySocketProvider",
+      "fuchsia.netstack.Netstack",
+      "fuchsia.process.Launcher",
+      "fuchsia.ui.input.ImeService",
+      "fuchsia.ui.input.ImeVisibilityService",
+      "fuchsia.ui.policy.Presenter",
+      "fuchsia.ui.scenic.Scenic",
+      "fuchsia.ui.viewsv1.ViewManager",
+      "fuchsia.vulkan.loader.Loader",
+      "fuchsia.wlan.service.Wlan"
+  ]
+}