webkit: Update the calls from RunAllPending() to RunUntilIdle().

webkit/fileapi/file_system_file_stream_reader_unittest.cc

Index: webkit/fileapi/file_system_file_stream_reader_unittest.cc
diff --git a/webkit/fileapi/file_system_file_stream_reader_unittest.cc b/webkit/fileapi/file_system_file_stream_reader_unittest.cc
index c2de0cd38adb614eabe2e2a661030f5b5c3394d1..456e30d4162ce4207d8310fc2867bb3e257303d1 100644
--- a/webkit/fileapi/file_system_file_stream_reader_unittest.cc
+++ b/webkit/fileapi/file_system_file_stream_reader_unittest.cc
@@ -80,14 +80,14 @@ class FileSystemFileStreamReaderTest : public testing::Test {
     file_system_context_->sandbox_provider()->ValidateFileSystemRoot(
         GURL(kURLOrigin), kFileSystemTypeTemporary, true,  // create
         base::Bind(&OnValidateFileSystem));
-    MessageLoop::current()->RunAllPending();
+    MessageLoop::current()->RunUntilIdle();
 
     WriteFile(kTestFileName, kTestData, kTestDataSize,
               &test_file_modification_time_);
   }
 
   virtual void TearDown() OVERRIDE {
-    MessageLoop::current()->RunAllPending();
+    MessageLoop::current()->RunUntilIdle();
   }
 
  protected: