[WebView] Move files from native to browser

android_webview/native/aw_media_url_interceptor.cc

-// 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 <string>
-
-#include "android_webview/common/url_constants.h"
-#include "android_webview/native/aw_media_url_interceptor.h"
-#include "base/android/apk_assets.h"
-#include "base/strings/string_util.h"
-#include "content/public/common/url_constants.h"
-
-namespace android_webview {
-
-bool AwMediaUrlInterceptor::Intercept(const std::string& url,
-                                      int* fd,
-                                      int64_t* offset,
-                                      int64_t* size) const {
-  std::string asset_file_prefix(url::kFileScheme);
-  asset_file_prefix.append(url::kStandardSchemeSeparator);
-  asset_file_prefix.append(android_webview::kAndroidAssetPath);
-
-  if (base::StartsWith(url, asset_file_prefix, base::CompareCase::SENSITIVE)) {
-    std::string filename(url);
-    base::ReplaceFirstSubstringAfterOffset(
-        &filename, 0, asset_file_prefix, "assets/");
-    base::MemoryMappedFile::Region region =
-        base::MemoryMappedFile::Region::kWholeFile;
-    *fd = base::android::OpenApkAsset(filename, &region);
-    *offset = region.offset;
-    *size = region.size;
-    return *fd != -1;
-  }
-
-  return false;
-}
-
-}  // namespace android_webview