Convert UtilityProcessHost to bootstrap Mojo Channel using the Shell connection

chrome/browser/safe_browsing/sandboxed_dmg_analyzer_mac_unittest.cc

Index: chrome/browser/safe_browsing/sandboxed_dmg_analyzer_mac_unittest.cc
diff --git a/chrome/browser/safe_browsing/sandboxed_dmg_analyzer_mac_unittest.cc b/chrome/browser/safe_browsing/sandboxed_dmg_analyzer_mac_unittest.cc
index 2d1689ff1e13cb30ff7f0d2b2ec1f9f689922d25..7b5f2db01f258b793ae37fb7f4a1b345d7012fd6 100644
--- a/chrome/browser/safe_browsing/sandboxed_dmg_analyzer_mac_unittest.cc
+++ b/chrome/browser/safe_browsing/sandboxed_dmg_analyzer_mac_unittest.cc
@@ -15,6 +15,7 @@
 #include "base/strings/string_number_conversions.h"
 #include "chrome/common/chrome_paths.h"
 #include "chrome/common/safe_browsing/zip_analyzer_results.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 "testing/gtest/include/gtest/gtest.h"
@@ -28,6 +29,10 @@ class SandboxedDMGAnalyzerTest : public testing::Test {
       : browser_thread_bundle_(content::TestBrowserThreadBundle::IO_MAINLOOP) {
   }
 
+  void SetUp() override {
+    shell_context_ = content::ShellContext::Create();
+  }
+
   void AnalyzeFile(const base::FilePath& path,
                    zip_analyzer::Results* results) {
     base::RunLoop run_loop;
@@ -74,6 +79,7 @@ class SandboxedDMGAnalyzerTest : public testing::Test {
 
   content::TestBrowserThreadBundle browser_thread_bundle_;
   content::InProcessUtilityThreadHelper utility_thread_helper_;
+  std::unique_ptr<content::ShellContext> shell_context_;
 };
 
 TEST_F(SandboxedDMGAnalyzerTest, AnalyzeDMG) {