Fixed playing video in component extensions.

net/url_request/url_request_simple_job.cc

 // Copyright (c) 2012 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/url_request/url_request_simple_job.h"
 
+#include <vector>
+
 #include "base/bind.h"
 #include "base/compiler_specific.h"
 #include "base/message_loop/message_loop.h"
 #include "net/base/io_buffer.h"
 #include "net/base/net_errors.h"
+#include "net/http/http_request_headers.h"
+#include "net/http/http_util.h"
 #include "net/url_request/url_request_status.h"
 
 namespace net {
 
 URLRequestSimpleJob::URLRequestSimpleJob(
     URLRequest* request, NetworkDelegate* network_delegate)
-    : URLRequestJob(request, network_delegate),
+    : URLRangeRequestJob(request, network_delegate),
       data_offset_(0),
       weak_factory_(this) {}
 
 void URLRequestSimpleJob::Start() {
   // Start reading asynchronously so that all error reporting and data
   // callbacks happen as they would for network requests.
   base::MessageLoop::current()->PostTask(
       FROM_HERE,
       base::Bind(&URLRequestSimpleJob::StartAsync, weak_factory_.GetWeakPtr()));
 }
 
 bool URLRequestSimpleJob::GetMimeType(std::string* mime_type) const {
   *mime_type = mime_type_;
   return true;
 }
 
 bool URLRequestSimpleJob::GetCharset(std::string* charset) {
   *charset = charset_;
   return true;
 }
 
 URLRequestSimpleJob::~URLRequestSimpleJob() {}
 
 bool URLRequestSimpleJob::ReadRawData(IOBuffer* buf, int buf_size,
                                       int* bytes_read) {
   DCHECK(bytes_read);
-  int remaining = static_cast<int>(data_.size()) - data_offset_;
+  int remaining = byte_range_.last_byte_position() - data_offset_ + 1;
   if (buf_size > remaining)
     buf_size = remaining;
   memcpy(buf->data(), data_.data() + data_offset_, buf_size);
   data_offset_ += buf_size;
   *bytes_read = buf_size;
   return true;
 }
 
 void URLRequestSimpleJob::StartAsync() {
   if (!request_)
     return;
 
+  if (ranges().size() > 1) {
+    NotifyDone(URLRequestStatus(URLRequestStatus::FAILED,
+                                ERR_REQUEST_RANGE_NOT_SATISFIABLE));
+    return;
+  }
+
+  if (!ranges().empty() && range_parse_result() == OK)
+    byte_range_ = ranges().front();
+
   int result = GetData(&mime_type_, &charset_, &data_,
                        base::Bind(&URLRequestSimpleJob::OnGetDataCompleted,
                                   weak_factory_.GetWeakPtr()));
   if (result != ERR_IO_PENDING)
     OnGetDataCompleted(result);
 }
 
 void URLRequestSimpleJob::OnGetDataCompleted(int result) {
   if (result == OK) {
     // Notify that the headers are complete
+    if (!byte_range_.ComputeBounds(data_.size())) {
+      NotifyDone(URLRequestStatus(URLRequestStatus::FAILED,
+                 ERR_REQUEST_RANGE_NOT_SATISFIABLE));
+      return;
+    }
+
+    data_offset_ = byte_range_.first_byte_position();
+    int remaining_bytes = byte_range_.last_byte_position() -
+        byte_range_.first_byte_position() + 1;
+    set_expected_content_size(remaining_bytes);
     NotifyHeadersComplete();
   } else {
     NotifyStartError(URLRequestStatus(URLRequestStatus::FAILED, result));
   }
 }
 
 }  // namespace net