[Cronet] Add CookieStoreIOS.

components/cronet/ios/test/test_server.cc

Index: components/cronet/ios/test/test_server.cc
diff --git a/components/cronet/ios/test/test_server.cc b/components/cronet/ios/test/test_server.cc
index 460d18d82a9cbba2dda62c336f87f08170723868..1d549a079fb2768e82d1586ac6a53fe7891c3e5e 100644
--- a/components/cronet/ios/test/test_server.cc
+++ b/components/cronet/ios/test/test_server.cc
@@ -16,6 +16,7 @@
 namespace {
 
 const char kEchoHeaderPath[] = "/EchoHeader?";
+const char kSetCookiePath[] = "/SetCookie?";
 
 std::unique_ptr<net::EmbeddedTestServer> g_test_server;
 
@@ -23,19 +24,43 @@ std::unique_ptr<net::test_server::HttpResponse> EchoHeaderInRequest(
     const net::test_server::HttpRequest& request) {
   std::string header_name;
   std::string header_value;
-  if (base::StartsWith(request.relative_url, kEchoHeaderPath,
-                       base::CompareCase::INSENSITIVE_ASCII)) {
-    header_name = request.relative_url.substr(strlen(kEchoHeaderPath));
-  }
+  DCHECK(base::StartsWith(request.relative_url, kEchoHeaderPath,
+                          base::CompareCase::INSENSITIVE_ASCII));
+
+  header_name = request.relative_url.substr(strlen(kEchoHeaderPath));
   auto it = request.headers.find(header_name);
   if (it != request.headers.end())
     header_value = it->second;
-  std::unique_ptr<net::test_server::BasicHttpResponse> http_response(
-      new net::test_server::BasicHttpResponse());
+  auto http_response = base::MakeUnique<net::test_server::BasicHttpResponse>();
   http_response->set_content(header_value);
   return std::move(http_response);
 }
 
+std::unique_ptr<net::test_server::HttpResponse> SetAndEchoCookieInResponse(
+    const net::test_server::HttpRequest& request) {
+  std::string cookie_line;
+  DCHECK(base::StartsWith(request.relative_url, kSetCookiePath,
+                          base::CompareCase::INSENSITIVE_ASCII));
+  cookie_line = request.relative_url.substr(strlen(kSetCookiePath));
+  auto http_response = base::MakeUnique<net::test_server::BasicHttpResponse>();
+  http_response->set_content(cookie_line);
+  http_response->AddCustomHeader("Set-Cookie", cookie_line);
+  return std::move(http_response);
+}
+
+std::unique_ptr<net::test_server::HttpResponse> CronetTestRequestHandler(
+    const net::test_server::HttpRequest& request) {
+  if (base::StartsWith(request.relative_url, kEchoHeaderPath,
+                       base::CompareCase::INSENSITIVE_ASCII)) {
+    return EchoHeaderInRequest(request);
+  }
+  if (base::StartsWith(request.relative_url, kSetCookiePath,
+                       base::CompareCase::INSENSITIVE_ASCII)) {
+    return SetAndEchoCookieInResponse(request);
+  }
+  return base::MakeUnique<net::test_server::BasicHttpResponse>();
+}
+
 }  // namespace
 
 namespace cronet {
@@ -45,7 +70,7 @@ bool TestServer::Start() {
   DCHECK(!g_test_server.get());
   g_test_server = base::MakeUnique<net::EmbeddedTestServer>(
       net::EmbeddedTestServer::TYPE_HTTP);
-  g_test_server->RegisterRequestHandler(base::Bind(&EchoHeaderInRequest));
+  g_test_server->RegisterRequestHandler(base::Bind(&CronetTestRequestHandler));
   CHECK(g_test_server->Start());
   return true;
 }
@@ -60,4 +85,9 @@ std::string TestServer::GetEchoHeaderURL(const std::string& header_name) {
   return g_test_server->GetURL(kEchoHeaderPath + header_name).spec();
 }
 
+std::string TestServer::GetSetCookieURL(const std::string& cookie_line) {
+  DCHECK(g_test_server);
+  return g_test_server->GetURL(kSetCookiePath + cookie_line).spec();
+}
+
 }  // namespace cronet