Enable database logging on history thread.

chrome/browser/history/history.cc

Index: chrome/browser/history/history.cc
===================================================================
--- chrome/browser/history/history.cc	(revision 25477)
+++ chrome/browser/history/history.cc	(working copy)
@@ -40,6 +40,7 @@
 #include "chrome/browser/history/history_types.h"
 #include "chrome/browser/history/in_memory_database.h"
 #include "chrome/browser/history/in_memory_history_backend.h"
+#include "chrome/browser/history/visit_log.h"
 #include "chrome/browser/profile.h"
 #include "chrome/browser/visitedlink_master.h"
 #include "chrome/common/chrome_constants.h"
@@ -53,8 +54,27 @@
 using base::Time;
 using history::HistoryBackend;
 
-static const char* kHistoryThreadName = "Chrome_HistoryThread";
+namespace {
 
+class ChromeHistoryThread : public ChromeThread {
+ public:
+  ChromeHistoryThread() : ChromeThread(ChromeThread::HISTORY) {}
+  virtual ~ChromeHistoryThread() {
+    // We cannot rely on our base class to call Stop() in case we want our
+    // CleanUp function to run.
+    Stop();
+  }
+ protected:
+  virtual void Run(MessageLoop* message_loop) {
+    // Allocate VisitLog on local stack so it will be saved in crash dump.
+    history::VisitLog visit_log;
+    history::InitVisitLog(&visit_log);
+    message_loop->Run();
+  }
+};
+
+}  // namespace
+
 // Sends messages from the backend to us on the main thread. This must be a
 // separate class from the history service so that it can hold a reference to
 // the history service (otherwise we would have to manually AddRef and
@@ -100,7 +120,7 @@
 const history::StarID HistoryService::kBookmarkBarID = 1;
 
 HistoryService::HistoryService()
-    : thread_(new base::Thread(kHistoryThreadName)),
+    : thread_(new ChromeHistoryThread()),
       profile_(NULL),
       backend_loaded_(false) {
   // Is NULL when running generate_profile.
@@ -111,7 +131,7 @@
 }
 
 HistoryService::HistoryService(Profile* profile)
-    : thread_(new base::Thread(kHistoryThreadName)),
+    : thread_(new ChromeHistoryThread()),
       profile_(profile),
       backend_loaded_(false) {
   registrar_.Add(this, NotificationType::HISTORY_URLS_DELETED,