Fix cpplint warnings
diff --git a/src/libfuzzer_example_test.cc b/src/libfuzzer_example_test.cc
index 69d5da4..bbd77f7 100644
--- a/src/libfuzzer_example_test.cc
+++ b/src/libfuzzer_example_test.cc
@@ -15,7 +15,7 @@
#include <stdlib.h>
#include <sys/wait.h>
-#include <gtest/gtest.h>
+#include "gtest/gtest.h"
const int kDefaultLibFuzzerError = 77;
diff --git a/src/libfuzzer_protobuf_mutator.cc b/src/libfuzzer_protobuf_mutator.cc
index 6b9ed9c..f998948 100644
--- a/src/libfuzzer_protobuf_mutator.cc
+++ b/src/libfuzzer_protobuf_mutator.cc
@@ -16,6 +16,7 @@
#include <string.h>
#include <cassert>
+#include <string>
extern "C" size_t LLVMFuzzerMutate(uint8_t*, size_t, size_t);
diff --git a/src/libfuzzer_protobuf_mutator.h b/src/libfuzzer_protobuf_mutator.h
index 7857d1b..90f1f91 100644
--- a/src/libfuzzer_protobuf_mutator.h
+++ b/src/libfuzzer_protobuf_mutator.h
@@ -15,6 +15,8 @@
#ifndef LIBFUZZER_PROTOBUF_MUTATOR_H_
#define LIBFUZZER_PROTOBUF_MUTATOR_H_
+#include <string>
+
#include "protobuf_mutator.h"
namespace protobuf_mutator {
diff --git a/src/protobuf_mutator.cc b/src/protobuf_mutator.cc
index ae66fe6..7c6e43f 100644
--- a/src/protobuf_mutator.cc
+++ b/src/protobuf_mutator.cc
@@ -20,9 +20,8 @@
#include <random>
#include <string>
-#include "google/protobuf/message.h"
-
#include "field_instance.h"
+#include "google/protobuf/message.h"
#include "weighted_reservoir_sampler.h"
using google::protobuf::Descriptor;
diff --git a/src/protobuf_mutator.h b/src/protobuf_mutator.h
index da02c29..69fa13d 100644
--- a/src/protobuf_mutator.h
+++ b/src/protobuf_mutator.h
@@ -20,6 +20,7 @@
#include <memory>
#include <random>
+#include <string>
namespace google {
namespace protobuf {
diff --git a/src/protobuf_mutator_test.cc b/src/protobuf_mutator_test.cc
index fe005bf..beeca6a 100644
--- a/src/protobuf_mutator_test.cc
+++ b/src/protobuf_mutator_test.cc
@@ -14,11 +14,15 @@
#include "protobuf_mutator.h"
-#include <gtest/gtest.h>
+#include <algorithm>
+#include <set>
#include <string>
+#include <utility>
+#include <vector>
#include "google/protobuf/text_format.h"
#include "google/protobuf/util/message_differencer.h"
+#include "gtest/gtest.h"
#include "protobuf_mutator.pb.h"
diff --git a/src/weighted_reservoir_sampler_test.cc b/src/weighted_reservoir_sampler_test.cc
index e441ef8..956ee38 100644
--- a/src/weighted_reservoir_sampler_test.cc
+++ b/src/weighted_reservoir_sampler_test.cc
@@ -14,7 +14,10 @@
#include "weighted_reservoir_sampler.h"
-#include <gtest/gtest.h>
+#include <tuple>
+#include <vector>
+
+#include "gtest/gtest.h"
using testing::TestWithParam;
using testing::ValuesIn;
