Activate the debugger in the developer shell earlier.

This will support breaking in debugger statements in JavaScript files read from the command line.
Review URL: http://codereview.chromium.org/113998

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@2124 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/d8.cc

@@ -460,6 +460,16 @@ void Shell::Initialize() {
 #ifdef ENABLE_DEBUGGER_SUPPORT
   // Set the security token of the debug context to allow access.
   i::Debug::debug_context()->set_security_token(i::Heap::undefined_value());
+
+  // Start the debugger agent if requested.
+  if (i::FLAG_debugger_agent) {
+    v8::Debug::EnableAgent("d8 shell", i::FLAG_debugger_port);
+  }
+
+  // Start the in-process debugger if requested.
+  if (i::FLAG_debugger && !i::FLAG_debugger_agent) {
+    v8::Debug::SetDebugEventListener(HandleDebugEvent);
+  }
 #endif
 }
 
@@ -721,16 +731,6 @@ int Shell::Main(int argc, char* argv[]) {
       RunRemoteDebugger(i::FLAG_debugger_port);
       return 0;
     }
-
-    // Start the debugger agent if requested.
-    if (i::FLAG_debugger_agent) {
-      v8::Debug::EnableAgent("d8 shell", i::FLAG_debugger_port);
-    }
-
-    // Start the in-process debugger if requested.
-    if (i::FLAG_debugger && !i::FLAG_debugger_agent) {
-      v8::Debug::SetDebugEventListener(HandleDebugEvent);
-    }
 #endif
   }
   if (run_shell)