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..e11e28cbfeebfc1cfe2b73e3699973e078c6917b 100644
--- a/net/test/url_request/url_request_mock_http_job.h
+++ b/net/test/url_request/url_request_mock_http_job.h
@@ -28,6 +28,12 @@ namespace net {
 
 class URLRequestMockHTTPJob : public URLRequestFileJob {
  public:
+  enum FailurePhase {
+    START = 0,
+    READ_ASYNC = 1,
+    READ_SYNC = 2,
+  };
+
   // Note that all file IO is done using |worker_pool|.
   URLRequestMockHTTPJob(URLRequest* request,
                         NetworkDelegate* network_delegate,
@@ -35,6 +41,9 @@ class URLRequestMockHTTPJob : public URLRequestFileJob {
                         const scoped_refptr<base::TaskRunner>& task_runner);
 
   virtual void Start() override;
+  virtual bool ReadRawData(IOBuffer* buf,

[xunjieli, 2014/10/17 00:31:35]

nit: remove virtual.

[mef, 2014/10/17 20:19:43]

Done.

+                           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;
@@ -58,6 +67,13 @@ class URLRequestMockHTTPJob : public URLRequestFileJob {
   // construct a mock URL.
   static GURL GetMockUrl(const base::FilePath& path);
 
+  // Given the path to a file relative to the path passed to AddUrlHandler(),
+  // construct a mock URL that reports |net_error| at given |phase| of the
+  // request. Reporting |net_error| ERR_IO_PENDING results in a hung request.
+  static GURL GetMockUrlWithFailure(const base::FilePath& path,
+                                    FailurePhase phase,
+                                    int net_error);
+
   // Returns a URLRequestJobFactory::ProtocolHandler that serves
   // URLRequestMockHTTPJob's responding like an HTTP server. |base_path| is the
   // file path leading to the root of the directory to use as the root of the
@@ -78,7 +94,13 @@ class URLRequestMockHTTPJob : public URLRequestFileJob {
 
  private:
   void GetResponseInfoConst(HttpResponseInfo* info) const;
-  void GetRawHeaders(std::string raw_headers);
+  void SetHeadersAndStart(const std::string& raw_headers);
+  // Checks query part of request url, and reports an error if it matches.
+  // Error is parsed out from the query and is reported synchronously.
+  // Reporting ERR_IO_PENDING results in a hung request.
+  // The "readasync" error is posted asynchronously.
+  bool MaybeReportErrorOnPhase(FailurePhase phase);
+
   std::string raw_headers_;
   const scoped_refptr<base::TaskRunner> task_runner_;