Remove calls to MessageLoop(ForUI|ForIO)::Run/RunUntilIdle.

chrome/browser/spellchecker/spellcheck_message_filter_platform_mac_browsertest.cc

Index: chrome/browser/spellchecker/spellcheck_message_filter_platform_mac_browsertest.cc
diff --git a/chrome/browser/spellchecker/spellcheck_message_filter_platform_mac_browsertest.cc b/chrome/browser/spellchecker/spellcheck_message_filter_platform_mac_browsertest.cc
index 4fea85865c2f4fb3fe4db131e91bd880eb3fb75d..eeff5e0b2e590eeac17ce53ea79e97b705584f89 100644
--- a/chrome/browser/spellchecker/spellcheck_message_filter_platform_mac_browsertest.cc
+++ b/chrome/browser/spellchecker/spellcheck_message_filter_platform_mac_browsertest.cc
@@ -8,10 +8,11 @@
 
 #include "base/command_line.h"
 #include "base/memory/scoped_vector.h"
-#include "base/message_loop/message_loop.h"
+#include "base/run_loop.h"
 #include "base/single_thread_task_runner.h"
 #include "base/stl_util.h"
 #include "base/strings/utf_string_conversions.h"
+#include "base/threading/thread_task_runner_handle.h"
 #include "chrome/test/base/in_process_browser_test.h"
 #include "components/spellcheck/common/spellcheck_messages.h"
 #include "components/spellcheck/common/spellcheck_result.h"
@@ -21,19 +22,19 @@
 // allows verification by the test case.
 class TestingSpellCheckMessageFilter : public SpellCheckMessageFilterPlatform {
  public:
-  explicit TestingSpellCheckMessageFilter(base::MessageLoopForUI* loop)
-      : SpellCheckMessageFilterPlatform(0),
-        loop_(loop) { }
+  explicit TestingSpellCheckMessageFilter(const base::Closure& quit_closure)
+      : SpellCheckMessageFilterPlatform(0), quit_closure_(quit_closure) {}
 
   bool Send(IPC::Message* message) override {
     sent_messages_.push_back(message);
-    loop_->task_runner()->PostTask(FROM_HERE,
-                                   base::MessageLoop::QuitWhenIdleClosure());
+    main_thread_task_runner_->PostTask(FROM_HERE, quit_closure_);
     return true;
   }
 
   ScopedVector<IPC::Message> sent_messages_;
-  base::MessageLoopForUI* loop_;
+  const scoped_refptr<base::SingleThreadTaskRunner> main_thread_task_runner_ =
+      base::ThreadTaskRunnerHandle::Get();
+  const base::Closure quit_closure_;
 
  private:
   ~TestingSpellCheckMessageFilter() override {}
@@ -44,14 +45,15 @@ typedef InProcessBrowserTest SpellCheckMessageFilterPlatformMacBrowserTest;
 // Uses browsertest to setup chrome threads.
 IN_PROC_BROWSER_TEST_F(SpellCheckMessageFilterPlatformMacBrowserTest,
                        SpellCheckReturnMessage) {
+  base::RunLoop run_loop;
   scoped_refptr<TestingSpellCheckMessageFilter> target(
-      new TestingSpellCheckMessageFilter(base::MessageLoopForUI::current()));
+      new TestingSpellCheckMessageFilter(run_loop.QuitWhenIdleClosure()));
 
   SpellCheckHostMsg_RequestTextCheck to_be_received(
       123, 456, base::UTF8ToUTF16("zz."), std::vector<SpellCheckMarker>());
   target->OnMessageReceived(to_be_received);
 
-  base::MessageLoopForUI::current()->Run();
+  run_loop.Run();
   EXPECT_EQ(1U, target->sent_messages_.size());
 
   SpellCheckMsg_RespondTextCheck::Param params;