Add a mimeHandler extension API.

extensions/browser/api/mime_handler/mime_handler.cc

Index: extensions/browser/api/mime_handler/mime_handler.cc
diff --git a/extensions/browser/api/mime_handler/mime_handler.cc b/extensions/browser/api/mime_handler/mime_handler.cc
new file mode 100644
index 0000000000000000000000000000000000000000..f42f94e4e02cd181e760e4b19a6e33019d960dd3
--- /dev/null
+++ b/extensions/browser/api/mime_handler/mime_handler.cc
@@ -0,0 +1,95 @@
+// Copyright 2015 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 "extensions/browser/api/mime_handler/mime_handler.h"
+
+#include "content/public/browser/stream_handle.h"
+#include "content/public/browser/stream_info.h"
+#include "extensions/browser/guest_view/mime_handler_view/mime_handler_view_guest.h"
+#include "extensions/common/constants.h"
+#include "mojo/public/cpp/bindings/map.h"
+#include "net/http/http_response_headers.h"
+
+namespace extensions {
+namespace {
+
+mojo::Map<mojo::String, mojo::String> CreateResponseHeadersMap(
+    const net::HttpResponseHeaders* headers) {
+  std::map<std::string, std::string> result;
+  if (!headers)
+    return mojo::Map<mojo::String, mojo::String>::From(result);
+
+  void* iter = nullptr;
+  std::string header_name;
+  std::string header_value;
+  while (headers->EnumerateHeaderLines(&iter, &header_name, &header_value)) {
+    auto& current_value = result[header_name];
+    if (!current_value.empty())
+      current_value += ", ";
+    current_value += header_value;
+  }
+  return mojo::Map<mojo::String, mojo::String>::From(result);
+}
+
+}  // namespace
+
+// static
+void MimeHandlerServiceImpl::Create(
+    base::WeakPtr<StreamContainer> stream_container,
+    mojo::InterfaceRequest<mime_handler::MimeHandlerService> request) {
+  mojo::BindToRequest(new MimeHandlerServiceImpl(stream_container), &request);
+}
+
+MimeHandlerServiceImpl::MimeHandlerServiceImpl(
+    base::WeakPtr<StreamContainer> stream_container)
+    : stream_(stream_container), weak_factory_(this) {
+}
+
+MimeHandlerServiceImpl::~MimeHandlerServiceImpl() {
+}
+
+void MimeHandlerServiceImpl::GetStreamInfo(
+    const mojo::Callback<void(mime_handler::StreamInfoPtr)>& callback) {
+  if (!stream_) {
+    callback.Run(mime_handler::StreamInfoPtr());
+    return;
+  }
+  callback.Run(mojo::ConvertTo<mime_handler::StreamInfoPtr>(*stream_));
+}
+
+void MimeHandlerServiceImpl::AbortStream(
+    const mojo::Callback<void()>& callback) {
+  stream_->Abort(base::Bind(&MimeHandlerServiceImpl::OnStreamClosed,
+                            weak_factory_.GetWeakPtr(), callback));
+}
+
+void MimeHandlerServiceImpl::OnStreamClosed(
+    const mojo::Callback<void()>& callback) {
+  callback.Run();
+}
+
+}  // namespace extensions
+
+namespace mojo {
+
+extensions::mime_handler::StreamInfoPtr TypeConverter<
+    extensions::mime_handler::StreamInfoPtr,
+    extensions::StreamContainer>::Convert(const extensions::StreamContainer&
+                                              stream) {
+  if (!stream.stream_info()->handle)
+    return extensions::mime_handler::StreamInfoPtr();
+
+  auto result = extensions::mime_handler::StreamInfo::New();
+  result->embedded = stream.embedded();
+  result->tab_id = stream.tab_id();
+  const content::StreamInfo* info = stream.stream_info();
+  result->mime_type = info->mime_type;
+  result->original_url = info->original_url.spec();
+  result->stream_url = info->handle->GetURL().spec();
+  result->response_headers =
+      extensions::CreateResponseHeadersMap(info->response_headers.get());
+  return result.Pass();
+}
+
+}  // namespace mojo