Implement Drain() on HttpPipelinedStream.

net/http/http_response_body_drainer_unittest.cc

 // Copyright (c) 2011 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 "net/http/http_response_body_drainer.h"
 
 #include <cstring>
 
 #include "base/bind.h"
 #include "base/compiler_specific.h"
@@ skipping 237 matching lines @@
   TestOldCompletionCallback callback;
   int too_many_chunks =
       HttpResponseBodyDrainer::kDrainBodyBufferSize / kMagicChunkSize;
   too_many_chunks += 1;  // Now it's too large.
 
   mock_stream_->set_num_chunks(too_many_chunks);
   drainer_->Start(session_);
   EXPECT_TRUE(result_waiter_.WaitForResult());
 }
 
+TEST_F(HttpResponseBodyDrainerTest, StartBodyTooLarge) {
+  TestOldCompletionCallback callback;
+  int too_many_chunks =
+      HttpResponseBodyDrainer::kDrainBodyBufferSize / kMagicChunkSize;
+  too_many_chunks += 1;  // Now it's too large.
+
+  mock_stream_->set_num_chunks(0);
+  drainer_->StartWithSize(session_, too_many_chunks * kMagicChunkSize);
+  EXPECT_TRUE(result_waiter_.WaitForResult());
+}
+
+TEST_F(HttpResponseBodyDrainerTest, StartWithNothingToDo) {
+  TestOldCompletionCallback callback;
+  mock_stream_->set_num_chunks(0);
+  drainer_->StartWithSize(session_, 0);
+  EXPECT_FALSE(result_waiter_.WaitForResult());
+}
+
 }  // namespace
 
 }  // namespace net