Convert UtilityProcessHost to bootstrap Mojo Channel using the Shell connection

chrome/browser/extensions/extension_gcm_app_handler_unittest.cc

Index: chrome/browser/extensions/extension_gcm_app_handler_unittest.cc
diff --git a/chrome/browser/extensions/extension_gcm_app_handler_unittest.cc b/chrome/browser/extensions/extension_gcm_app_handler_unittest.cc
index a04d0535df18bdc0b204a1b8c6ec43640192164d..36ba74e19611813f16a14f0b0ea8101afc7fd3c2 100644
--- a/chrome/browser/extensions/extension_gcm_app_handler_unittest.cc
+++ b/chrome/browser/extensions/extension_gcm_app_handler_unittest.cc
@@ -45,6 +45,7 @@
 #include "components/signin/core/browser/signin_manager.h"
 #include "content/public/browser/browser_context.h"
 #include "content/public/browser/browser_thread.h"
+#include "content/public/browser/shell_context.h"
 #include "content/public/test/test_browser_thread_bundle.h"
 #include "content/public/test/test_utils.h"
 #include "extensions/browser/extension_system.h"
@@ -240,6 +241,8 @@ class ExtensionGCMAppHandlerTest : public testing::Test {
     in_process_utility_thread_helper_.reset(
         new content::InProcessUtilityThreadHelper);
 
+    shell_context_ = content::ShellContext::Create();
+
     // This is needed to create extension service under CrOS.
 #if defined(OS_CHROMEOS)
     test_user_manager_.reset(new chromeos::ScopedTestUserManager());
@@ -397,6 +400,7 @@ class ExtensionGCMAppHandlerTest : public testing::Test {
   std::unique_ptr<content::InProcessUtilityThreadHelper>
       in_process_utility_thread_helper_;
   std::unique_ptr<TestingProfile> profile_;
+  std::unique_ptr<content::ShellContext> shell_context_;
   ExtensionService* extension_service_;  // Not owned.
   base::ScopedTempDir temp_dir_;