Certificate Transparency: Fetching of Signed Tree Heads (DRAFT)

components/safe_json_parser/safe_json_parser.cc

 // Copyright 2013 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 "components/safe_json_parser/safe_json_parser.h"
 
 #include <string>
 
 #include "base/strings/utf_string_conversions.h"
 #include "base/thread_task_runner_handle.h"
@@ skipping 13 matching lines @@
 
 SafeJsonParser::SafeJsonParser(const std::string& unsafe_json,
                                const SuccessCallback& success_callback,
                                const ErrorCallback& error_callback)
     : unsafe_json_(unsafe_json),
       success_callback_(success_callback),
       error_callback_(error_callback) {
 }
 
 void SafeJsonParser::Start() {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
-  BrowserThread::PostTask(
-      BrowserThread::IO, FROM_HERE,
-      base::Bind(&SafeJsonParser::StartWorkOnIOThread, this));
+  if (!BrowserThread::CurrentlyOn(BrowserThread::IO)) {
+    DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+    BrowserThread::PostTask(
+        BrowserThread::IO, FROM_HERE,
+        base::Bind(&SafeJsonParser::StartWorkOnIOThread, this));
+  } else {
+    StartWorkOnIOThread();
+  }

[Ryan Sleevi, 2015/06/29 11:58:13]

As discussed - follow up on the other CL

 }
 
 SafeJsonParser::~SafeJsonParser() {
 }
 
 void SafeJsonParser::StartWorkOnIOThread() {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
   UtilityProcessHost* host = UtilityProcessHost::Create(
       this, base::ThreadTaskRunnerHandle::Get().get());
   host->SetName(
@@ skipping 41 matching lines @@
     IPC_MESSAGE_HANDLER(SafeJsonParserHostMsg_ParseJSON_Succeeded,
                         OnJSONParseSucceeded)
     IPC_MESSAGE_HANDLER(SafeJsonParserHostMsg_ParseJSON_Failed,
                         OnJSONParseFailed)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
   return handled;
 }
 
 }  // namespace safe_json_parser