Remove calls to deprecated MessageLoop methods in chrome.

chrome/browser/sync_file_system/local/local_file_sync_context_unittest.cc

Index: chrome/browser/sync_file_system/local/local_file_sync_context_unittest.cc
diff --git a/chrome/browser/sync_file_system/local/local_file_sync_context_unittest.cc b/chrome/browser/sync_file_system/local/local_file_sync_context_unittest.cc
index 329be21543c20d48e459d851213c39601328e975..f709ec8d157948886e372c020c9de6a490e1f2af 100644
--- a/chrome/browser/sync_file_system/local/local_file_sync_context_unittest.cc
+++ b/chrome/browser/sync_file_system/local/local_file_sync_context_unittest.cc
@@ -15,6 +15,7 @@
 #include "base/location.h"
 #include "base/macros.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/threading/thread_task_runner_handle.h"
@@ -106,7 +107,7 @@ class LocalFileSyncContextTest : public testing::Test {
                                 storage::ScopedFile* snapshot) {
     StartPrepareForSync(file_system_context, url, sync_mode,
                         metadata, changes, snapshot);
-    base::MessageLoop::current()->Run();
+    base::RunLoop().Run();
     return status_;
   }
 
@@ -162,7 +163,7 @@ class LocalFileSyncContextTest : public testing::Test {
         base::Bind(&LocalFileSyncContextTest::DidApplyRemoteChange,
                    base::Unretained(this),
                    base::RetainedRef(file_system_context), url));
-    base::MessageLoop::current()->Run();
+    base::RunLoop().Run();
     return status_;
   }
 
@@ -197,7 +198,7 @@ class LocalFileSyncContextTest : public testing::Test {
 
   base::File::Error WaitUntilModifyFileIsDone() {
     while (!async_modify_finished_)
-      base::MessageLoop::current()->RunUntilIdle();
+      base::RunLoop().RunUntilIdle();
     return file_error_;
   }
 
@@ -326,7 +327,7 @@ class LocalFileSyncContextTest : public testing::Test {
       // Write should succeed.
       EXPECT_EQ(base::File::FILE_OK, WaitUntilModifyFileIsDone());
     } else {
-      base::MessageLoop::current()->RunUntilIdle();
+      base::RunLoop().RunUntilIdle();
       EXPECT_FALSE(async_modify_finished_);
     }
 
@@ -583,7 +584,7 @@ TEST_F(LocalFileSyncContextTest, DISABLED_PrepareSyncWhileWriting) {
 
   // The PrepareForSync must have been started; wait until DidPrepareForSync
   // is done.
-  base::MessageLoop::current()->Run();
+  base::RunLoop().Run();
   ASSERT_FALSE(has_inflight_prepare_for_sync_);
 
   // Now PrepareForSync should have run and returned OK.