Get content_browsertest working. I've added a simple test for now, and will convert the tests in sr…

content/test/test_launcher.cc

Index: content/test/test_launcher.cc
===================================================================
--- content/test/test_launcher.cc	(revision 147044)
+++ content/test/test_launcher.cc	(working copy)
@@ -41,6 +41,10 @@
 
 namespace test_launcher {
 
+namespace {
+TestLauncherDelegate* g_launcher_delegate;
+}
+
 // The environment variable name for the total number of test shards.
 const char kTestTotalShards[] = "GTEST_TOTAL_SHARDS";
 // The environment variable name for the test shard index.
@@ -573,6 +577,8 @@
 int LaunchTests(TestLauncherDelegate* launcher_delegate,
                 int argc,
                 char** argv) {
+  DCHECK(!g_launcher_delegate);
+  g_launcher_delegate = launcher_delegate;
   launcher_delegate->EarlyInitialize();
 
   CommandLine::Init(argc, argv);
@@ -664,4 +670,8 @@
   return exit_code;
 }
 
+TestLauncherDelegate* GetCurrentTestLauncherDelegate() {
+  return g_launcher_delegate;
+}
+
 }  // namespace test_launcher