It2Me Native Messaging Host crash

This is a regression caused by the recent migration to SimpleUrlLoader:
https://chromium-review.googlesource.com/1194042

I had thought all of our binaries now had the correct Mojo dependencies
added but it looks like the NMH binary was missed.

Bug: 879593
Change-Id: I2858524d1d78abce45e7a6a34a8739ad47320a5e
Reviewed-on: https://chromium-review.googlesource.com/1199705
Reviewed-by: Antonio Gomes <tonikitoo@igalia.com>
Commit-Queue: Jamie Walch <jamiewalch@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#588068}(cherry picked from commit 82548bb)
Reviewed-on: https://chromium-review.googlesource.com/1204431
Reviewed-by: Joe Downing <joedow@chromium.org>
Cr-Commit-Position: refs/branch-heads/3538@{#25}
Cr-Branched-From: 79f7c91-refs/heads/master@{#587811}

remoting/host/it2me/BUILD.gn

@@ -45,6 +45,7 @@ source_set("common") {
 
   deps = [
     "//base:i18n",
+    "//mojo/core/embedder",
     "//net",
     "//remoting/base",
     "//remoting/host",

remoting/host/it2me/it2me_native_messaging_host_main.cc

@@ -13,6 +13,7 @@
 #include "base/run_loop.h"
 #include "base/task/task_scheduler/task_scheduler.h"
 #include "build/build_config.h"
+#include "mojo/core/embedder/embedder.h"
 #include "remoting/base/auto_thread_task_runner.h"
 #include "remoting/base/breakpad.h"
 #include "remoting/host/chromoting_host_context.h"
@@ -98,6 +99,8 @@ int It2MeNativeMessagingHostMain(int argc, char** argv) {
   // Required to find the ICU data file, used by some file_util routines.
   base::i18n::InitializeICU();
 
+  mojo::core::Init();
+
   base::TaskScheduler::CreateAndStartWithDefaultParams("It2Me");
 
   remoting::LoadResources("");