Using API key specified from js

components/copresence/rpc/http_post.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 "components/copresence/rpc/http_post.h"
 
 // TODO(ckehoe): Support third-party protobufs too.
 #include <google/protobuf/message_lite.h>
 
 #include "base/bind.h"
 #include "google_apis/google_api_keys.h"
 #include "net/base/load_flags.h"
 #include "net/base/url_util.h"
 #include "net/http/http_status_code.h"
 #include "net/url_request/url_fetcher.h"
 #include "net/url_request/url_request_context_getter.h"
 
 namespace copresence {
 
-// TODO(ckehoe): Come up with a better fix for Chromium.
-#ifdef GOOGLE_CHROME_BUILD
-namespace {
-
-const char kApiKeyField[] = "key";
-
-}  // namespace
-#endif
-
+const char HttpPost::kApiKeyField[] = "key";
 const char HttpPost::kTracingTokenField[] = "trace";
 
 HttpPost::HttpPost(net::URLRequestContextGetter* url_context_getter,
                    const std::string& server_host,
-                   const std::string& rpc_name,
-                   const std::string& tracing_token,
-                   const google::protobuf::MessageLite& request_proto) {
-  // Create the base URL to call.
-  GURL url(server_host + "/" + rpc_name);
+                   const std::string& rpc_name)
+    : url_context_getter_(url_context_getter),
+      url_(server_host + "/" + rpc_name) {}
 
-  // Add the Chrome API key.
-  // TODO(ckehoe): Replace this with an app-specific key once the
-  //               server API supports it. Also fix the Chromium case.
+HttpPost::~HttpPost() {}
+
+void HttpPost::set_tracing_token(const std::string& tracing_token) {
+  if (tracing_token.empty())
+    return;
+
+  url_ = net::AppendQueryParameter(
+      url_, kTracingTokenField, "token:" + tracing_token);
+}
+
+void HttpPost::Start(const ResponseCallback& response_callback,
+                     const google::protobuf::MessageLite& request_proto) {
+  response_callback_ = response_callback;
+
+  // If no API key is specified, use the Chrome API key.
+  if (api_key_.empty()) {
 #ifdef GOOGLE_CHROME_BUILD
-  DCHECK(google_apis::HasKeysConfigured());
-  url = net::AppendQueryParameter(url, kApiKeyField, google_apis::GetAPIKey());
+DCHECK(google_apis::HasKeysConfigured());
+api_key_ = google_apis::GetAPIKey();
+#else
+LOG(ERROR) << "No Copresence API key provided";
+return;
 #endif
-
-  // Add the tracing token, if specified.
-  if (!tracing_token.empty()) {
-    url = net::AppendQueryParameter(
-        url, kTracingTokenField, "token:" + tracing_token);
   }
+  url_ = net::AppendQueryParameter(url_, kApiKeyField, api_key_);
 
   // Serialize the proto for transmission.
   std::string request_data;
   bool serialize_success = request_proto.SerializeToString(&request_data);
   DCHECK(serialize_success);
 
   // Configure and send the request.
   url_fetcher_.reset(net::URLFetcher::Create(
-      kUrlFetcherId, url, net::URLFetcher::POST, this));
-  url_fetcher_->SetRequestContext(url_context_getter);
+      kUrlFetcherId, url_, net::URLFetcher::POST, this));
+  url_fetcher_->SetRequestContext(url_context_getter_);
   url_fetcher_->SetLoadFlags(net::LOAD_BYPASS_CACHE |
                              net::LOAD_DISABLE_CACHE |
                              net::LOAD_DO_NOT_SAVE_COOKIES |
                              net::LOAD_DO_NOT_SEND_COOKIES |
                              net::LOAD_DO_NOT_SEND_AUTH_DATA);
   url_fetcher_->SetUploadData("application/x-protobuf", request_data);
-}
-
-HttpPost::~HttpPost() {}
-
-void HttpPost::Start(const ResponseCallback& response_callback) {
-  response_callback_ = response_callback;
   url_fetcher_->Start();
 }
 
 void HttpPost::OnURLFetchComplete(const net::URLFetcher* source) {
   DCHECK_EQ(url_fetcher_.get(), source);
 
   // Gather response info.
   std::string response;
   source->GetResponseAsString(&response);
   int response_code = source->GetResponseCode();
 
   // Log any errors.
   if (response_code < 0) {
     LOG(WARNING) << "Couldn't contact the Copresence server at "
                  << source->GetURL();
   } else if (response_code != net::HTTP_OK) {
     LOG(WARNING) << "Copresence request got HTTP response code "
                  << response_code << ". Response:\n" << response;
   }
 
   // Return the response.
   response_callback_.Run(response_code, response);
 }
 
 }  // namespace copresence