Revert r25770 due to valgrind failures on Linux.

TEST=none.
BUG=none.

Review URL: http://codereview.chromium.org/199065

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@25781 0039d316-1c4b-4281-b951-d872f2087c98

base/thread.cc

@@ -135,10 +135,6 @@ void Thread::StopSoon() {
   message_loop_->PostTask(FROM_HERE, new ThreadQuitTask());
 }
 
-void Thread::Run(MessageLoop* message_loop) {
-  message_loop->Run();
-}
-
 void Thread::ThreadMain() {
   // The message loop for this thread.
   MessageLoop message_loop(startup_data_->options.message_loop_type);
@@ -157,7 +153,7 @@ void Thread::ThreadMain() {
   // startup_data_ can't be touched anymore since the starting thread is now
   // unlocked.
 
-  Run(message_loop_);
+  message_loop.Run();
 
   // Let the thread do extra cleanup.
   CleanUp();

base/thread.h

@@ -114,9 +114,6 @@ class Thread : PlatformThread::Delegate {
   // Called just prior to starting the message loop
   virtual void Init() {}
 
-  // Called to start the message loop
-  virtual void Run(MessageLoop* message_loop);
-
   // Called just after the message loop ends
   virtual void CleanUp() {}
 

chrome/browser/history/history.cc

@@ -40,7 +40,6 @@
 #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"
@@ -54,26 +53,7 @@
 using base::Time;
 using history::HistoryBackend;
 
-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
+static const char* kHistoryThreadName = "Chrome_HistoryThread";
 
 // 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
@@ -120,7 +100,7 @@ class HistoryService::BackendDelegate : public HistoryBackend::Delegate {
 const history::StarID HistoryService::kBookmarkBarID = 1;
 
 HistoryService::HistoryService()
-    : thread_(new ChromeHistoryThread()),
+    : thread_(new base::Thread(kHistoryThreadName)),
       profile_(NULL),
       backend_loaded_(false) {
   // Is NULL when running generate_profile.
@@ -131,7 +111,7 @@ HistoryService::HistoryService()
 }
 
 HistoryService::HistoryService(Profile* profile)
-    : thread_(new ChromeHistoryThread()),
+    : thread_(new base::Thread(kHistoryThreadName)),
       profile_(profile),
       backend_loaded_(false) {
   registrar_.Add(this, NotificationType::HISTORY_URLS_DELETED,