Upstream most of ios/web/net

ios/web/net/web_http_protocol_handler_delegate.mm

+// 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.
+
+#include "ios/web/net/web_http_protocol_handler_delegate.h"
+
+#include "ios/web/public/url_scheme_util.h"
+#include "ios/web/public/web_client.h"
+#import "ios/web/web_state/ui/crw_static_file_web_view.h"
+#include "net/url_request/url_request_context_getter.h"
+#include "url/gurl.h"
+
+namespace {
+
+bool IsAppSpecificScheme(NSURL* url) {
+  NSString* scheme = [url scheme];
+  if (![scheme length])
+    return false;
+  // Use the GURL implementation, but with a scheme-only URL to avoid
+  // unnecessary parsing in GURL construction.
+  GURL gurl([[scheme stringByAppendingString:@":"] UTF8String]);
+  return web::GetWebClient()->IsAppSpecificURL(gurl);
+}
+
+}  // namespace
+
+namespace web {
+
+WebHTTPProtocolHandlerDelegate::WebHTTPProtocolHandlerDelegate(
+    net::URLRequestContextGetter* default_getter)
+    : default_getter_(default_getter) {
+  DCHECK(default_getter_);
+}
+
+WebHTTPProtocolHandlerDelegate::~WebHTTPProtocolHandlerDelegate() {
+}
+
+bool WebHTTPProtocolHandlerDelegate::CanHandleRequest(NSURLRequest* request) {
+  // Accept all the requests. If we declined a request, it would then be passed
+  // to the default iOS network stack, which would possibly load it.
+  // As we want to control what is loaded, we have to prevent the default stack
+  // from loading anything.
+  return true;
+}
+
+bool WebHTTPProtocolHandlerDelegate::IsRequestSupported(NSURLRequest* request) {
+  return web::UrlHasWebScheme([request URL]) ||
+         [CRWStaticFileWebView isStaticFileRequest:request] ||
+         (IsAppSpecificScheme([request URL]) &&
+          IsAppSpecificScheme([request mainDocumentURL]));
+}
+
+net::URLRequestContextGetter*
+WebHTTPProtocolHandlerDelegate::GetDefaultURLRequestContext() {
+  return default_getter_.get();
+}
+
+}  // namespace web