Initial implementation of Cronet Async API.

net/test/url_request/url_request_mock_http_job.h

Index: net/test/url_request/url_request_mock_http_job.h
diff --git a/net/test/url_request/url_request_mock_http_job.h b/net/test/url_request/url_request_mock_http_job.h
index eb68a2d27f126e1708f8d2af5f320dce7449dfe5..58f84be8fc852b2883ab2099165c577c9042f06f 100644
--- a/net/test/url_request/url_request_mock_http_job.h
+++ b/net/test/url_request/url_request_mock_http_job.h
@@ -35,6 +35,9 @@ class URLRequestMockHTTPJob : public URLRequestFileJob {
                         const scoped_refptr<base::TaskRunner>& task_runner);
 
   virtual void Start() override;
+  virtual bool ReadRawData(IOBuffer* buf,
+                           int buf_size,
+                           int* bytes_read) override;
   virtual bool GetMimeType(std::string* mime_type) const override;
   virtual int GetResponseCode() const override;
   virtual bool GetCharset(std::string* charset) override;
@@ -79,6 +82,7 @@ class URLRequestMockHTTPJob : public URLRequestFileJob {
  private:
   void GetResponseInfoConst(HttpResponseInfo* info) const;
   void GetRawHeaders(std::string raw_headers);
+  bool ReportMockErrorFromQuery(const std::string& step);

[mmenke, 2014/10/16 16:39:34]

Think this function name is a little weird.  Maybe:  MaybeReportErrorOnStep. 
Should also document it here, and its dependence on the URL's query string..

[mef, 2014/10/17 20:19:41]

Done.

   std::string raw_headers_;
   const scoped_refptr<base::TaskRunner> task_runner_;