Introduce the plumbing necessary to report Unrecoverable error from model safe workers.

chrome/browser/sync/glue/ui_model_worker_unittest.cc

Index: chrome/browser/sync/glue/ui_model_worker_unittest.cc
diff --git a/chrome/browser/sync/glue/ui_model_worker_unittest.cc b/chrome/browser/sync/glue/ui_model_worker_unittest.cc
index c0230f1879016f99aa85118b1dde05705c3f0701..ebc5e3d77767a246f4ce20401bca16273b90a057 100644
--- a/chrome/browser/sync/glue/ui_model_worker_unittest.cc
+++ b/chrome/browser/sync/glue/ui_model_worker_unittest.cc
@@ -9,10 +9,12 @@
 #include "base/synchronization/waitable_event.h"
 #include "base/threading/thread.h"
 #include "chrome/browser/sync/glue/ui_model_worker.h"
+#include "chrome/browser/sync/sessions/unrecoverable_error_info.h"
 #include "content/browser/browser_thread.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 using browser_sync::UIModelWorker;
+using browser_sync::sessions::UnrecoverableErrorInfo;
 
 // Various boilerplate, primarily for the StopWithPendingWork test.
 
@@ -24,7 +26,7 @@ class UIModelWorkerVisitor {
        was_run_(was_run) { }
   virtual ~UIModelWorkerVisitor() { }
 
-  virtual void DoWork() {
+  virtual void DoWork(UnrecoverableErrorInfo* error_info) {
     EXPECT_TRUE(BrowserThread::CurrentlyOn(BrowserThread::UI));
     was_run_->Signal();
     if (quit_loop_when_run_)
@@ -44,7 +46,8 @@ class Syncer {
   ~Syncer() {}
 
   void SyncShare(UIModelWorkerVisitor* visitor) {
-    scoped_ptr<Callback0::Type> c(NewCallback(visitor,
+    scoped_ptr<Callback1<UnrecoverableErrorInfo*>::Type> c(
+        NewCallback(visitor,
         &UIModelWorkerVisitor::DoWork));
     worker_->DoWorkAndWaitUntilDone(c.get());
   }