Test for --nacl-gdb functionality.

chrome/browser/nacl_host/nacl_process_host.cc

Index: chrome/browser/nacl_host/nacl_process_host.cc
===================================================================
--- chrome/browser/nacl_host/nacl_process_host.cc	(revision 126069)
+++ chrome/browser/nacl_host/nacl_process_host.cc	(working copy)
@@ -279,7 +279,12 @@
   }
 #if defined(OS_WIN)
   if (RunningOnWOW64()) {
-    NaClBrokerService::GetInstance()->OnLoaderDied();
+    // If nacl-gdb switch is not empty, NaCl loader have been launched

[Mark Seaborn, 2012/03/13 01:05:20]

'have' -> 'has'

Aha, --nacl-gdb already got broken by my bug fix!  Not intentional, I assure
you. :-)  But it demonstrates the need for this test.

[halyavin, 2012/03/13 12:48:27]

Done.

+    // without broker and so we shouldn't inform broker about its termination.
+    if (CommandLine::ForCurrentProcess()->GetSwitchValuePath(
+        switches::kNaClGdb).empty()) {

[Mark Seaborn, 2012/03/13 01:05:20]

This line needs indenting

[halyavin, 2012/03/13 12:48:27]

Done.

+      NaClBrokerService::GetInstance()->OnLoaderDied();
+    }
   } else {
     debug_context_->SetChildProcessHost(NULL);
   }