Fuchsia: Moved SandboxPolicyFuchsia to service/service_manager/sandbox

This will allow to reuse the class in //webrunner when starting context
process.

Bug: 861853
Change-Id: I499850a7ba8df4b73e5f71b6a61568a5cfca1e6b
Reviewed-on: https://chromium-review.googlesource.com/c/1355764
Reviewed-by: Tom Sepez <[email protected]>
Reviewed-by: Wez <[email protected]>
Reviewed-by: Charlie Reis <[email protected]>
Commit-Queue: Sergey Ulanov <[email protected]>
Cr-Commit-Position: refs/heads/master@{#612494}
diff --git a/content/browser/BUILD.gn b/content/browser/BUILD.gn
index e27ca34..df5eef6 100644
--- a/content/browser/BUILD.gn
+++ b/content/browser/BUILD.gn
@@ -1938,6 +1938,7 @@
       "child_process_launcher_helper_fuchsia.cc",
       "memory/memory_monitor_fuchsia.cc",
     ]
+    deps += [ "//third_party/fuchsia-sdk/sdk:zx" ]
   } else if (is_posix) {
     sources += [
       "child_process_launcher_helper_posix.cc",