Move html_viewer from mojo/services to components.

mojo/services/html_viewer/web_mime_registry_impl.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 "mojo/services/html_viewer/web_mime_registry_impl.h"
-
-#include "base/files/file_path.h"
-#include "base/strings/string_util.h"
-#include "base/strings/sys_string_conversions.h"
-#include "base/strings/utf_string_conversions.h"
-#include "media/base/key_systems.h"
-#include "media/filters/stream_parser_factory.h"
-#include "net/base/mime_util.h"
-#include "third_party/WebKit/public/platform/WebString.h"
-
-namespace html_viewer {
-namespace {
-
-std::string ToASCIIOrEmpty(const blink::WebString& string) {
-  return base::IsStringASCII(string) ? base::UTF16ToASCII(string)
-                                     : std::string();
-}
-
-}  // namespace
-
-blink::WebMimeRegistry::SupportsType WebMimeRegistryImpl::supportsMIMEType(
-    const blink::WebString& mime_type) {
-  return net::IsSupportedMimeType(ToASCIIOrEmpty(mime_type)) ?
-      blink::WebMimeRegistry::IsSupported :
-      blink::WebMimeRegistry::IsNotSupported;
-}
-
-blink::WebMimeRegistry::SupportsType WebMimeRegistryImpl::supportsImageMIMEType(
-    const blink::WebString& mime_type) {
-  return net::IsSupportedImageMimeType(ToASCIIOrEmpty(mime_type)) ?
-      blink::WebMimeRegistry::IsSupported :
-      blink::WebMimeRegistry::IsNotSupported;
-}
-
-blink::WebMimeRegistry::SupportsType
-WebMimeRegistryImpl::supportsImagePrefixedMIMEType(
-    const blink::WebString& mime_type) {
-  std::string ascii_mime_type = ToASCIIOrEmpty(mime_type);
-  return (net::IsSupportedImageMimeType(ascii_mime_type) ||
-          (StartsWithASCII(ascii_mime_type, "image/", true) &&
-           net::IsSupportedNonImageMimeType(ascii_mime_type)))
-             ? WebMimeRegistry::IsSupported
-             : WebMimeRegistry::IsNotSupported;
-}
-
-blink::WebMimeRegistry::SupportsType
-    WebMimeRegistryImpl::supportsJavaScriptMIMEType(
-    const blink::WebString& mime_type) {
-  return net::IsSupportedJavascriptMimeType(ToASCIIOrEmpty(mime_type)) ?
-      blink::WebMimeRegistry::IsSupported :
-      blink::WebMimeRegistry::IsNotSupported;
-}
-
-blink::WebMimeRegistry::SupportsType WebMimeRegistryImpl::supportsMediaMIMEType(
-    const blink::WebString& mime_type,
-    const blink::WebString& codecs,
-    const blink::WebString& key_system) {
-  const std::string mime_type_ascii = ToASCIIOrEmpty(mime_type);
-  // Not supporting the container is a flat-out no.
-  if (!net::IsSupportedMediaMimeType(mime_type_ascii))
-    return IsNotSupported;
-
-  // Mojo does not currently support any key systems.
-  if (!key_system.isEmpty())
-    return IsNotSupported;
-
-  // Check list of strict codecs to see if it is supported.
-  if (net::IsStrictMediaMimeType(mime_type_ascii)) {
-    // Check if the codecs are a perfect match.
-    std::vector<std::string> strict_codecs;
-    net::ParseCodecString(ToASCIIOrEmpty(codecs), &strict_codecs, false);
-    return static_cast<WebMimeRegistry::SupportsType>(
-        net::IsSupportedStrictMediaMimeType(mime_type_ascii, strict_codecs));
-  }
-
-  // If we don't recognize the codec, it's possible we support it.
-  std::vector<std::string> parsed_codecs;
-  net::ParseCodecString(ToASCIIOrEmpty(codecs), &parsed_codecs, true);
-  if (!net::AreSupportedMediaCodecs(parsed_codecs))
-    return MayBeSupported;
-
-  // Otherwise we have a perfect match.
-  return IsSupported;
-}
-
-bool WebMimeRegistryImpl::supportsMediaSourceMIMEType(
-    const blink::WebString& mime_type,
-    const blink::WebString& codecs) {
-  const std::string mime_type_ascii = ToASCIIOrEmpty(mime_type);
-  if (mime_type_ascii.empty())
-    return false;
-
-  std::vector<std::string> parsed_codec_ids;
-  net::ParseCodecString(ToASCIIOrEmpty(codecs), &parsed_codec_ids, false);
-  return media::StreamParserFactory::IsTypeSupported(mime_type_ascii,
-                                                     parsed_codec_ids);
-}
-
-blink::WebMimeRegistry::SupportsType
-    WebMimeRegistryImpl::supportsNonImageMIMEType(
-    const blink::WebString& mime_type) {
-  return net::IsSupportedNonImageMimeType(ToASCIIOrEmpty(mime_type)) ?
-      blink::WebMimeRegistry::IsSupported :
-      blink::WebMimeRegistry::IsNotSupported;
-}
-
-blink::WebString WebMimeRegistryImpl::mimeTypeForExtension(
-    const blink::WebString& file_extension) {
-  std::string mime_type;
-  net::GetMimeTypeFromExtension(
-      base::FilePath::FromUTF16Unsafe(file_extension).value(), &mime_type);
-  return blink::WebString::fromUTF8(mime_type);
-}
-
-blink::WebString WebMimeRegistryImpl::wellKnownMimeTypeForExtension(
-    const blink::WebString& file_extension) {
-  std::string mime_type;
-  net::GetWellKnownMimeTypeFromExtension(
-      base::FilePath::FromUTF16Unsafe(file_extension).value(), &mime_type);
-  return blink::WebString::fromUTF8(mime_type);
-}
-
-blink::WebString WebMimeRegistryImpl::mimeTypeFromFile(
-    const blink::WebString& file_path) {
-  std::string mime_type;
-  net::GetMimeTypeFromFile(base::FilePath::FromUTF16Unsafe(file_path),
-                           &mime_type);
-  return blink::WebString::fromUTF8(mime_type);
-}
-
-}  // namespace html_viewer