Add debug command break flag for debugger host dispatch

src/debug.cc

Index: src/debug.cc
===================================================================
--- src/debug.cc	(revision 1707)
+++ src/debug.cc	(working copy)
@@ -1825,6 +1825,9 @@
         Debugger::host_dispatch_handler_(reinterpret_cast<void*>(dispatch),
                                          Debugger::host_dispatch_handler_data_);
       }
+      if (auto_continue && !HasCommands()) {
+        return;
+      }
       continue;
     }
 
@@ -2030,6 +2033,8 @@
   Logger::DebugTag("Put command on command_queue.");
   command_queue_.Put(command_copy);
   command_received_->Signal();
+
+  // Set the debug command break flag to have the command processed.
   if (!Debug::InDebugger()) {
     StackGuard::DebugCommand();
   }
@@ -2042,7 +2047,7 @@
 
 
 void Debugger::ProcessHostDispatch(void* dispatch) {
-// Puts a host dispatch comming from the public API on the queue.
+  // Puts a host dispatch comming from the public API on the queue.
   uint16_t hack[3];
   hack[0] = 0;
   hack[1] = reinterpret_cast<uint32_t>(dispatch) >> 16;
@@ -2050,6 +2055,11 @@
   Logger::DebugTag("Put dispatch on command_queue.");
   command_queue_.Put(Vector<uint16_t>(hack, 3).Clone());
   command_received_->Signal();
+
+  // Set the debug command break flag to have the host dispatch processed.
+  if (!Debug::InDebugger()) {
+    StackGuard::DebugCommand();
+  }
 }