Fixing additional binaries which require Mojo initialization

I've found two more binaries which require Mojo init so I've updated
them.  I decided not to update every binary as we can easily add the
init call later if we find something else which needs it.

Change-Id: I7eec1ef23842d8247975edb2f0d9fccc67cdab33
Reviewed-on: https://chromium-review.googlesource.com/1182011Reviewed-by: Gary Kacmarcik <garykac@chromium.org>
Reviewed-by: John Abd-El-Malek <jam@chromium.org>
Commit-Queue: Joe Downing <joedow@chromium.org>
Cr-Commit-Position: refs/heads/master@{#584747}

remoting/host/BUILD.gn

@@ -598,6 +598,7 @@ if (enable_remoting_host) {
 
       deps += [
         "//google_apis",
+        "//mojo/core/embedder",
         "//net",
         "//remoting/host/setup",
       ]

remoting/host/setup/start_host_main.cc

@@ -16,6 +16,7 @@
 #include "base/task/task_scheduler/task_scheduler.h"
 #include "base/threading/thread.h"
 #include "build/build_config.h"
+#include "mojo/core/embedder/embedder.h"
 #include "net/url_request/url_fetcher.h"
 #include "net/url_request/url_request_context_getter.h"
 #include "remoting/base/logging.h"
@@ -139,6 +140,8 @@ int StartHostMain(int argc, char** argv) {
 
   base::TaskScheduler::CreateAndStartWithDefaultParams("RemotingHostSetup");
 
+  mojo::core::Init();
+
   std::string host_name = command_line->GetSwitchValueASCII("name");
   std::string host_pin = command_line->GetSwitchValueASCII("pin");
   std::string auth_code = command_line->GetSwitchValueASCII("code");

remoting/test/BUILD.gn

@@ -70,6 +70,7 @@ static_library("test_support") {
 
   public_deps = [
     "//base",
+    "//mojo/core/embedder",
     "//net",
     "//remoting/base",
     "//remoting/client",

remoting/test/DEPS

 include_rules = [
   "+google_apis",
   "+jingle/glue",
+  "+mojo/core/embedder",
   "+net",
   "+remoting/client",
   "+remoting/codec",

remoting/test/chromoting_test_driver.cc

@@ -14,6 +14,7 @@
 #include "base/test/test_suite.h"
 #include "base/test/test_switches.h"
 #include "google_apis/google_api_keys.h"
+#include "mojo/core/embedder/embedder.h"
 #include "net/base/escape.h"
 #include "remoting/test/chromoting_test_driver_environment.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ -190,6 +191,8 @@ int main(int argc, char* argv[]) {
 
   base::TaskScheduler::CreateAndStartWithDefaultParams("ChromotingTestDriver");
 
+  mojo::core::Init();
+
   // Update the logging verbosity level if user specified one.
   std::string verbosity_level(
       command_line->GetSwitchValueASCII(switches::kLoggingLevelSwitchName));