chrome: Use base::MessageLoop. (Part 3)

chrome/browser/printing/print_job.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/printing/print_job.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/message_loop.h"
 #include "base/threading/thread_restrictions.h"
@@ skipping 12 matching lines @@
 void HoldRefCallback(const scoped_refptr<printing::PrintJobWorkerOwner>& owner,
                      const base::Closure& callback) {
   callback.Run();
 }
 
 }  // namespace
 
 namespace printing {
 
 PrintJob::PrintJob()
-    : ui_message_loop_(MessageLoop::current()),
+    : ui_message_loop_(base::MessageLoop::current()),
       source_(NULL),
       worker_(),
       settings_(),
       is_job_pending_(false),
       is_canceling_(false),
       ALLOW_THIS_IN_INITIALIZER_LIST(quit_factory_(this)) {
   DCHECK(ui_message_loop_);
   // This is normally a UI message loop, but in unit tests, the message loop is
   // of the 'default' type.
-  DCHECK(ui_message_loop_->type() == MessageLoop::TYPE_UI ||
-         ui_message_loop_->type() == MessageLoop::TYPE_DEFAULT);
+  DCHECK(ui_message_loop_->type() == base::MessageLoop::TYPE_UI ||
+         ui_message_loop_->type() == base::MessageLoop::TYPE_DEFAULT);
   ui_message_loop_->AddDestructionObserver(this);
 }
 
 PrintJob::~PrintJob() {
   ui_message_loop_->RemoveDestructionObserver(this);
   // The job should be finished (or at least canceled) when it is destroyed.
   DCHECK(!is_job_pending_);
   DCHECK(!is_canceling_);
   if (worker_.get())
     DCHECK(worker_->message_loop() == NULL);
-  DCHECK_EQ(ui_message_loop_, MessageLoop::current());
+  DCHECK_EQ(ui_message_loop_, base::MessageLoop::current());
 }
 
 void PrintJob::Initialize(PrintJobWorkerOwner* job,
                           PrintedPagesSource* source,
                           int page_count) {
   DCHECK(!source_);
   DCHECK(!worker_.get());
   DCHECK(!is_job_pending_);
   DCHECK(!is_canceling_);
   DCHECK(!document_.get());
   source_ = source;
   worker_.reset(job->DetachWorker(this));
   settings_ = job->settings();
 
   PrintedDocument* new_doc =
       new PrintedDocument(settings_, source_, job->cookie());
   new_doc->set_page_count(page_count);
   UpdatePrintedDocument(new_doc);
 
   // Don't forget to register to our own messages.
   registrar_.Add(this, chrome::NOTIFICATION_PRINT_JOB_EVENT,
                  content::Source<PrintJob>(this));
 }
 
 void PrintJob::Observe(int type,
                        const content::NotificationSource& source,
                        const content::NotificationDetails& details) {
-  DCHECK_EQ(ui_message_loop_, MessageLoop::current());
+  DCHECK_EQ(ui_message_loop_, base::MessageLoop::current());
   switch (type) {
     case chrome::NOTIFICATION_PRINT_JOB_EVENT: {
       OnNotifyPrintJobEvent(*content::Details<JobEventDetails>(details).ptr());
       break;
     }
     default: {
       break;
     }
   }
 }
@@ skipping 21 matching lines @@
     // Always use an invalid cookie in this case.
     return 0;
   return document_->cookie();
 }
 
 void PrintJob::WillDestroyCurrentMessageLoop() {
   NOTREACHED();
 }
 
 void PrintJob::StartPrinting() {
-  DCHECK_EQ(ui_message_loop_, MessageLoop::current());
+  DCHECK_EQ(ui_message_loop_, base::MessageLoop::current());
   DCHECK(worker_->message_loop());
   DCHECK(!is_job_pending_);
   if (!worker_->message_loop() || is_job_pending_)
     return;
 
   // Real work is done in PrintJobWorker::StartPrinting().
   worker_->message_loop()->PostTask(
       FROM_HERE,
       base::Bind(&HoldRefCallback, make_scoped_refptr(this),
                  base::Bind(&PrintJobWorker::StartPrinting,
                             base::Unretained(worker_.get()), document_)));
   // Set the flag right now.
   is_job_pending_ = true;
 
   // Tell everyone!
   scoped_refptr<JobEventDetails> details(
       new JobEventDetails(JobEventDetails::NEW_DOC, document_.get(), NULL));
   content::NotificationService::current()->Notify(
       chrome::NOTIFICATION_PRINT_JOB_EVENT,
       content::Source<PrintJob>(this),
       content::Details<JobEventDetails>(details.get()));
 }
 
 void PrintJob::Stop() {
-  DCHECK_EQ(ui_message_loop_, MessageLoop::current());
+  DCHECK_EQ(ui_message_loop_, base::MessageLoop::current());
 
   if (quit_factory_.HasWeakPtrs()) {
     // In case we're running a nested message loop to wait for a job to finish,
     // and we finished before the timeout, quit the nested loop right away.
     Quit();
     quit_factory_.InvalidateWeakPtrs();
   }
 
   // Be sure to live long enough.
   scoped_refptr<PrintJob> handle(this);
 
-  MessageLoop* worker_loop = worker_->message_loop();
+  base::MessageLoop* worker_loop = worker_->message_loop();
   if (worker_loop) {
     ControlledWorkerShutdown();
 
     is_job_pending_ = false;
     registrar_.Remove(this, chrome::NOTIFICATION_PRINT_JOB_EVENT,
                       content::Source<PrintJob>(this));
   }
   // Flush the cached document.
   UpdatePrintedDocument(NULL);
 }
 
 void PrintJob::Cancel() {
   if (is_canceling_)
     return;
   is_canceling_ = true;
 
   // Be sure to live long enough.
   scoped_refptr<PrintJob> handle(this);
 
-  DCHECK_EQ(ui_message_loop_, MessageLoop::current());
-  MessageLoop* worker_loop = worker_.get() ? worker_->message_loop() : NULL;
+  DCHECK_EQ(ui_message_loop_, base::MessageLoop::current());
+  base::MessageLoop* worker_loop =
+      worker_.get() ? worker_->message_loop() : NULL;
   if (worker_loop) {
     // Call this right now so it renders the context invalid. Do not use
     // InvokeLater since it would take too much time.
     worker_->Cancel();
   }
   // Make sure a Cancel() is broadcast.
   scoped_refptr<JobEventDetails> details(
       new JobEventDetails(JobEventDetails::FAILED, NULL, NULL));
   content::NotificationService::current()->Notify(
       chrome::NOTIFICATION_PRINT_JOB_EVENT,
       content::Source<PrintJob>(this),
       content::Details<JobEventDetails>(details.get()));
   Stop();
   is_canceling_ = false;
 }
 
 bool PrintJob::FlushJob(base::TimeDelta timeout) {
   // Make sure the object outlive this message loop.
   scoped_refptr<PrintJob> handle(this);
 
-  MessageLoop::current()->PostDelayedTask(FROM_HERE,
-      base::Bind(&PrintJob::Quit, quit_factory_.GetWeakPtr()), timeout);
+  base::MessageLoop::current()->PostDelayedTask(
+      FROM_HERE,
+      base::Bind(&PrintJob::Quit, quit_factory_.GetWeakPtr()),
+      timeout);
 
-  MessageLoop::ScopedNestableTaskAllower allow(MessageLoop::current());
-  MessageLoop::current()->Run();
+  base::MessageLoop::ScopedNestableTaskAllower allow(
+      base::MessageLoop::current());
+  base::MessageLoop::current()->Run();
 
   return true;
 }
 
 void PrintJob::DisconnectSource() {
   source_ = NULL;
   if (document_.get())
     document_->DisconnectSource();
 }
 
@@ skipping 43 matching lines @@
     case JobEventDetails::NEW_DOC:
     case JobEventDetails::NEW_PAGE:
     case JobEventDetails::PAGE_DONE:
     case JobEventDetails::JOB_DONE:
     case JobEventDetails::ALL_PAGES_REQUESTED: {
       // Don't care.
       break;
     }
     case JobEventDetails::DOC_DONE: {
       // This will call Stop() and broadcast a JOB_DONE message.
-      MessageLoop::current()->PostTask(
+      base::MessageLoop::current()->PostTask(
           FROM_HERE, base::Bind(&PrintJob::OnDocumentDone, this));
       break;
     }
     default: {
       NOTREACHED();
       break;
     }
   }
 }
 
 void PrintJob::OnDocumentDone() {
   // Be sure to live long enough. The instance could be destroyed by the
   // JOB_DONE broadcast.
   scoped_refptr<PrintJob> handle(this);
 
   // Stop the worker thread.
   Stop();
 
   scoped_refptr<JobEventDetails> details(
       new JobEventDetails(JobEventDetails::JOB_DONE, document_.get(), NULL));
   content::NotificationService::current()->Notify(
       chrome::NOTIFICATION_PRINT_JOB_EVENT,
       content::Source<PrintJob>(this),
       content::Details<JobEventDetails>(details.get()));
 }
 
 void PrintJob::ControlledWorkerShutdown() {
-  DCHECK_EQ(ui_message_loop_, MessageLoop::current());
+  DCHECK_EQ(ui_message_loop_, base::MessageLoop::current());
 
   // The deadlock this code works around is specific to window messaging on
   // Windows, so we aren't likely to need it on any other platforms.
 #if defined(OS_WIN)
   // We could easily get into a deadlock case if worker_->Stop() is used; the
   // printer driver created a window as a child of the browser window. By
   // canceling the job, the printer driver initiated dialog box is destroyed,
   // which sends a blocking message to its parent window. If the browser window
   // thread is not processing messages, a deadlock occurs.
   //
@@ skipping 33 matching lines @@
 
   // Temporarily allow it until we fix
   // http://code.google.com/p/chromium/issues/detail?id=67044
   base::ThreadRestrictions::ScopedAllowIO allow_io;
 
   // Now make sure the thread object is cleaned up.
   worker_->Stop();
 }
 
 void PrintJob::Quit() {
-  MessageLoop::current()->Quit();
+  base::MessageLoop::current()->Quit();
 }
 
 // Takes settings_ ownership and will be deleted in the receiving thread.
 JobEventDetails::JobEventDetails(Type type,
                                  PrintedDocument* document,
                                  PrintedPage* page)
     : document_(document),
       page_(page),
       type_(type) {
 }
 
 JobEventDetails::~JobEventDetails() {
 }
 
 PrintedDocument* JobEventDetails::document() const {
   return document_;
 }
 
 PrintedPage* JobEventDetails::page() const {
   return page_;
 }
 
 }  // namespace printing