Fixes for iwyu

Author: chusitoo

exporters/otlp/src/otlp_environment.cc

@@ -2,6 +2,7 @@
 // SPDX-License-Identifier: Apache-2.0
 
 #include <chrono>
+#include <cstdint>
 #include <map>
 #include <string>
 #include <unordered_set>

exporters/otlp/src/otlp_http_exporter.cc

@@ -14,6 +14,7 @@
 #include "opentelemetry/exporters/otlp/otlp_http_exporter_options.h"
 #include "opentelemetry/exporters/otlp/otlp_recordable.h"
 #include "opentelemetry/exporters/otlp/otlp_recordable_utils.h"
+#include "opentelemetry/ext/http/client/http_client.h"
 #include "opentelemetry/nostd/span.h"
 #include "opentelemetry/nostd/string_view.h"
 #include "opentelemetry/sdk/common/exporter_utils.h"

exporters/otlp/src/otlp_http_log_record_exporter.cc

@@ -14,6 +14,7 @@
 #include "opentelemetry/exporters/otlp/otlp_http_log_record_exporter_options.h"
 #include "opentelemetry/exporters/otlp/otlp_log_recordable.h"
 #include "opentelemetry/exporters/otlp/otlp_recordable_utils.h"
+#include "opentelemetry/ext/http/client/http_client.h"
 #include "opentelemetry/nostd/span.h"
 #include "opentelemetry/nostd/string_view.h"
 #include "opentelemetry/sdk/common/exporter_utils.h"

exporters/otlp/src/otlp_http_metric_exporter.cc

@@ -14,6 +14,7 @@
 #include "opentelemetry/exporters/otlp/otlp_http_metric_exporter.h"
 #include "opentelemetry/exporters/otlp/otlp_http_metric_exporter_options.h"
 #include "opentelemetry/exporters/otlp/otlp_metric_utils.h"
+#include "opentelemetry/ext/http/client/http_client.h"
 #include "opentelemetry/nostd/string_view.h"
 #include "opentelemetry/sdk/common/exporter_utils.h"
 #include "opentelemetry/sdk/common/global_log_handler.h"

ext/src/http/client/curl/http_client_curl.cc

@@ -9,7 +9,9 @@
 #include <chrono>
 #include <cstdint>
 #include <cstring>
+#include <deque>
 #include <functional>
+#include <iterator>
 #include <list>
 #include <mutex>
 #include <string>

ext/src/http/client/curl/http_operation_curl.cc

@@ -15,6 +15,7 @@
 #include <map>
 #include <memory>
 #include <random>
+#include <ratio>
 #include <sstream>
 #include <string>
 #include <thread>

ext/test/http/curl_http_test.cc

@@ -1,10 +1,13 @@
 // Copyright The OpenTelemetry Authors
 // SPDX-License-Identifier: Apache-2.0
 
+#include <curl/curl.h>
 #include <curl/curlver.h>
-#include <gmock/gmock.h>
-#include <gtest/gtest.h>
+#include "gmock/gmock.h"
+#include "gtest/gtest.h"
+
 #include <string.h>
+#include <algorithm>
 #include <atomic>
 #include <chrono>
 #include <condition_variable>

sdk/test/common/env_var_test.cc

@@ -2,8 +2,10 @@
 // SPDX-License-Identifier: Apache-2.0
 
 #include <gtest/gtest.h>
-#include <stdlib.h>
+
 #include <chrono>
+#include <cstdint>
+#include <cstdlib>
 #include <string>
 
 #include "opentelemetry/sdk/common/env_variables.h"