[android_webview] Don't intercept resource and asset URLRequests.

android_webview/browser/net/fallback_protocol_handler.h

+// 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.
+
+#ifndef ANDROID_WEBVIEW_BROWSER_NET_FALLBACK_PROTOCOL_HANDLER_H_
+#define ANDROID_WEBVIEW_BROWSER_NET_FALLBACK_PROTOCOL_HANDLER_H_
+
+#include "base/memory/scoped_ptr.h"
+#include "base/memory/scoped_vector.h"
+#include "net/url_request/url_request_job_factory.h"
+
+class GURL;
+
+namespace net {
+class URLRequest;
+class URLRequestJob;
+class NetworkDelegate;
+}
+
+namespace android_webview {
+
+// This a protocol handler which delegates to a set of protocol handlers at
+// default priority and <F2>

[boliu, 2013/03/01 18:44:11]

<F2>?

+class FallbackProtocolHandler :
+    public net::URLRequestJobFactory::ProtocolHandler {
+ public:
+  // The object takes ownership of all of the supplied protocol handlers
+  // (|handlers| will be swapped out with an empty ScopedVector).
+  FallbackProtocolHandler(
+      ScopedVector<net::URLRequestJobFactory::ProtocolHandler>* handlers,
+      scoped_ptr<net::URLRequestJobFactory::ProtocolHandler> fallback_handler);
+  virtual ~FallbackProtocolHandler();
+
+  // net::URLRequestJobFactory::ProtocolHandler override -----------------------
+  virtual net::URLRequestJob* MaybeCreateJob(
+      net::URLRequest* request,
+      net::NetworkDelegate* network_delegate) const OVERRIDE;
+
+ private:
+  ScopedVector<net::URLRequestJobFactory::ProtocolHandler> handlers_;
+  scoped_ptr<net::URLRequestJobFactory::ProtocolHandler> fallback_handler_;
+
+  DISALLOW_COPY_AND_ASSIGN(FallbackProtocolHandler);
+};
+
+} // namespace android_webview
+
+#endif  // ANDROID_WEBVIEW_BROWSER_NET_FALLBACK_PROTOCOL_HANDLER_H_