MojoAsyncResourceHandler: Ignore Resume/OnWritable calls after error.

content/browser/loader/mojo_async_resource_handler.cc

 // Copyright 2016 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 "content/browser/loader/mojo_async_resource_handler.h"
 
 #include <utility>
 
 #include "base/command_line.h"
 #include "base/containers/hash_tables.h"
@@ skipping 329 matching lines @@
   }
   if (result != MOJO_RESULT_OK)
     return false;
   *buf = new WriterIOBuffer(shared_writer_, data, available);
   return true;
 }
 
 void MojoAsyncResourceHandler::Resume() {
   if (!did_defer_)
     return;
-  bool defer = false;
+  did_defer_ = false;
+
   if (is_using_io_buffer_not_from_writer_) {
     // |buffer_| is set to a net::IOBufferWithSize. Write the buffer contents
     // to the data pipe.
     DCHECK_GT(buffer_bytes_read_, 0u);
-    if (!CopyReadDataToDataPipe(&defer)) {
+    if (!CopyReadDataToDataPipe(&did_defer_)) {
       controller()->CancelWithError(net::ERR_FAILED);
       return;
     }
   } else {
     // Allocate a buffer for the next OnWillRead call here.
-    if (!AllocateWriterIOBuffer(&buffer_, &defer)) {
+    if (!AllocateWriterIOBuffer(&buffer_, &did_defer_)) {
       controller()->CancelWithError(net::ERR_FAILED);
       return;
     }
   }
 
-  if (defer) {
+  if (did_defer_) {
     // Continue waiting.
     return;
   }
-  did_defer_ = false;
   request()->LogUnblocked();
   controller()->Resume();
 }
 
 void MojoAsyncResourceHandler::OnDefer() {
   request()->LogBlockedBy("MojoAsyncResourceHandler");
   did_defer_ = true;
 }
 
 bool MojoAsyncResourceHandler::CheckForSufficientResource() {
   if (has_checked_for_sufficient_resources_)
     return true;
   has_checked_for_sufficient_resources_ = true;
 
   if (rdh_->HasSufficientResourcesForRequest(request()))
     return true;
 
   controller()->CancelWithError(net::ERR_INSUFFICIENT_RESOURCES);
   return false;
 }
 
 void MojoAsyncResourceHandler::OnWritable(MojoResult unused) {
   Resume();
 }
 
 }  // namespace content