Revert 274558 "Move some extensions renderer resources to extens..."

trunk/src/extensions/renderer/resources/send_request.js

-// Copyright 2014 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.
-
-var handleUncaughtException = require('uncaught_exception_handler').handle;
-var lastError = require('lastError');
-var logging = requireNative('logging');
-var natives = requireNative('sendRequest');
-var processNatives = requireNative('process');
-var validate = require('schemaUtils').validate;
-
-// All outstanding requests from sendRequest().
-var requests = {};
-
-// Used to prevent double Activity Logging for API calls that use both custom
-// bindings and ExtensionFunctions (via sendRequest).
-var calledSendRequest = false;
-
-// Runs a user-supplied callback safely.
-function safeCallbackApply(name, request, callback, args) {
-  try {
-    $Function.apply(callback, request, args);
-  } catch (e) {
-    var errorMessage = "Error in response to " + name + ": " + e;
-    if (request.stack && request.stack != '')
-      errorMessage += "\n" + request.stack;
-    handleUncaughtException(errorMessage, e);
-  }
-}
-
-// Callback handling.
-function handleResponse(requestId, name, success, responseList, error) {
-  // The chrome objects we will set lastError on. Really we should only be
-  // setting this on the callback's chrome object, but set on ours too since
-  // it's conceivable that something relies on that.
-  var callerChrome = chrome;
-
-  try {
-    var request = requests[requestId];
-    logging.DCHECK(request != null);
-
-    // lastError needs to be set on the caller's chrome object no matter what,
-    // though chances are it's the same as ours (it will be different when
-    // calling API methods on other contexts).
-    if (request.callback)
-      callerChrome = natives.GetGlobal(request.callback).chrome;
-
-    lastError.clear(chrome);
-    if (callerChrome !== chrome)
-      lastError.clear(callerChrome);
-
-    if (!success) {
-      if (!error)
-        error = "Unknown error.";
-      lastError.set(name, error, request.stack, chrome);
-      if (callerChrome !== chrome)
-        lastError.set(name, error, request.stack, callerChrome);
-    }
-
-    if (request.customCallback) {
-      safeCallbackApply(name,
-                        request,
-                        request.customCallback,
-                        $Array.concat([name, request], responseList));
-    }
-
-    if (request.callback) {
-      // Validate callback in debug only -- and only when the
-      // caller has provided a callback. Implementations of api
-      // calls may not return data if they observe the caller
-      // has not provided a callback.
-      if (logging.DCHECK_IS_ON() && !error) {
-        if (!request.callbackSchema.parameters)
-          throw new Error(name + ": no callback schema defined");
-        validate(responseList, request.callbackSchema.parameters);
-      }
-      safeCallbackApply(name, request, request.callback, responseList);
-    }
-
-    if (error &&
-        !lastError.hasAccessed(chrome) &&
-        !lastError.hasAccessed(callerChrome)) {
-      // The native call caused an error, but the developer didn't check
-      // runtime.lastError.
-      // Notify the developer of the error via the (error) console.
-      console.error("Unchecked runtime.lastError while running " +
-          (name || "unknown") + ": " + error +
-          (request.stack ? "\n" + request.stack : ""));
-    }
-  } finally {
-    delete requests[requestId];
-    lastError.clear(chrome);
-    if (callerChrome !== chrome)
-      lastError.clear(callerChrome);
-  }
-};
-
-function getExtensionStackTrace(call_name) {
-  var stack = $String.split(new Error().stack, '\n');
-  var id = processNatives.GetExtensionId();
-
-  // Remove stack frames before and after that weren't associated with the
-  // extension.
-  return $Array.join(stack.filter(function(line) {
-    return line.indexOf(id) != -1;
-  }), '\n');
-}
-
-function prepareRequest(args, argSchemas) {
-  var request = {};
-  var argCount = args.length;
-
-  // Look for callback param.
-  if (argSchemas.length > 0 &&
-      argSchemas[argSchemas.length - 1].type == "function") {
-    request.callback = args[args.length - 1];
-    request.callbackSchema = argSchemas[argSchemas.length - 1];
-    --argCount;
-  }
-
-  request.args = [];
-  for (var k = 0; k < argCount; k++) {
-    request.args[k] = args[k];
-  }
-
-  return request;
-}
-
-// Send an API request and optionally register a callback.
-// |optArgs| is an object with optional parameters as follows:
-// - customCallback: a callback that should be called instead of the standard
-//   callback.
-// - nativeFunction: the v8 native function to handle the request, or
-//   StartRequest if missing.
-// - forIOThread: true if this function should be handled on the browser IO
-//   thread.
-// - preserveNullInObjects: true if it is safe for null to be in objects.
-function sendRequest(functionName, args, argSchemas, optArgs) {
-  calledSendRequest = true;
-  if (!optArgs)
-    optArgs = {};
-  var request = prepareRequest(args, argSchemas);
-  request.stack = getExtensionStackTrace();
-  if (optArgs.customCallback) {
-    request.customCallback = optArgs.customCallback;
-  }
-
-  var nativeFunction = optArgs.nativeFunction || natives.StartRequest;
-
-  var requestId = natives.GetNextRequestId();
-  request.id = requestId;
-  requests[requestId] = request;
-
-  var hasCallback = request.callback || optArgs.customCallback;
-  return nativeFunction(functionName,
-                        request.args,
-                        requestId,
-                        hasCallback,
-                        optArgs.forIOThread,
-                        optArgs.preserveNullInObjects);
-}
-
-function getCalledSendRequest() {
-  return calledSendRequest;
-}
-
-function clearCalledSendRequest() {
-  calledSendRequest = false;
-}
-
-exports.sendRequest = sendRequest;
-exports.getCalledSendRequest = getCalledSendRequest;
-exports.clearCalledSendRequest = clearCalledSendRequest;
-exports.safeCallbackApply = safeCallbackApply;
-exports.getExtensionStackTrace = getExtensionStackTrace;
-
-// Called by C++.
-exports.handleResponse = handleResponse;