Clean up C++ includes (#21127)

Cleans up header order/grouping for consistency: associated header, C/C++ system/standard library headers, library headers, platform-specific #includes.

Adds <cstring> where strlen, memcpy are being used: there are a bunch of places we use them transitively.

Applies linter-required cleanups. Disables linter on one file due to included RapidJson header. See flutter/flutter#65676

This patch does not cover flutter/shell/platform/darwin. There's a separate, slightly more intensive cleanup for those in progress.

Author: cbracken

flow/gl_context_switch_unittests.cc

@@ -3,11 +3,12 @@
 // found in the LICENSE file.
 #define FML_USED_ON_EMBEDDER
 
+#include "flutter/flow/gl_context_switch.h"
+
 #include <functional>
 #include <future>
 #include <memory>
 
-#include "flutter/flow/gl_context_switch.h"
 #include "flutter/flow/testing/gl_context_switch_test.h"
 #include "gtest/gtest.h"
 

flow/layers/backdrop_filter_layer.h

@@ -6,7 +6,6 @@
 #define FLUTTER_FLOW_LAYERS_BACKDROP_FILTER_LAYER_H_
 
 #include "flutter/flow/layers/container_layer.h"
-
 #include "third_party/skia/include/core/SkImageFilter.h"
 
 namespace flutter {

flow/layers/child_scene_layer.h

@@ -5,13 +5,12 @@
 #ifndef FLUTTER_FLOW_LAYERS_CHILD_SCENE_LAYER_H_
 #define FLUTTER_FLOW_LAYERS_CHILD_SCENE_LAYER_H_
 
+#include "flutter/flow/layers/layer.h"
+#include "flutter/flow/scene_update_context.h"
 #include "third_party/skia/include/core/SkMatrix.h"
 #include "third_party/skia/include/core/SkPoint.h"
 #include "third_party/skia/include/core/SkSize.h"
 
-#include "flutter/flow/layers/layer.h"
-#include "flutter/flow/scene_update_context.h"
-
 namespace flutter {
 
 // Layer that represents an embedded child.

flow/layers/clip_path_layer.cc

@@ -5,9 +5,7 @@
 #include "flutter/flow/layers/clip_path_layer.h"
 
 #if defined(LEGACY_FUCHSIA_EMBEDDER)
-
 #include "lib/ui/scenic/cpp/commands.h"
-
 #endif
 
 namespace flutter {

flow/layers/color_filter_layer.h

@@ -6,7 +6,6 @@
 #define FLUTTER_FLOW_LAYERS_COLOR_FILTER_LAYER_H_
 
 #include "flutter/flow/layers/container_layer.h"
-
 #include "third_party/skia/include/core/SkColorFilter.h"
 
 namespace flutter {

flow/layers/container_layer.h

@@ -6,6 +6,7 @@
 #define FLUTTER_FLOW_LAYERS_CONTAINER_LAYER_H_
 
 #include <vector>
+
 #include "flutter/flow/layers/layer.h"
 
 namespace flutter {

flow/layers/fuchsia_layer_unittests.cc

@@ -2,10 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include <deque>
-
-#include "gtest/gtest.h"
-
 #include <fuchsia/ui/scenic/cpp/fidl.h>
 #include <fuchsia/ui/scenic/cpp/fidl_test_base.h>
 #include <lib/async-loop/cpp/loop.h>
@@ -16,6 +12,8 @@
 #include <lib/ui/scenic/cpp/id.h>
 #include <lib/ui/scenic/cpp/view_token_pair.h>
 
+#include <deque>
+
 #include "flutter/flow/layers/child_scene_layer.h"
 #include "flutter/flow/layers/container_layer.h"
 #include "flutter/flow/layers/opacity_layer.h"
@@ -24,6 +22,7 @@
 #include "flutter/flow/view_holder.h"
 #include "flutter/fml/platform/fuchsia/message_loop_fuchsia.h"
 #include "flutter/fml/task_runner.h"
+#include "gtest/gtest.h"
 
 namespace flutter {
 namespace testing {

flow/layers/image_filter_layer.h

@@ -6,7 +6,6 @@
 #define FLUTTER_FLOW_LAYERS_IMAGE_FILTER_LAYER_H_
 
 #include "flutter/flow/layers/container_layer.h"
-
 #include "third_party/skia/include/core/SkImageFilter.h"
 
 namespace flutter {

flow/layers/layer.h

@@ -28,11 +28,9 @@
 #include "third_party/skia/include/utils/SkNWayCanvas.h"
 
 #if defined(LEGACY_FUCHSIA_EMBEDDER)
-
 #include "flutter/flow/scene_update_context.h"  //nogncheck
 #include "lib/ui/scenic/cpp/resources.h"        //nogncheck
 #include "lib/ui/scenic/cpp/session.h"          //nogncheck
-
 #endif
 
 namespace flutter {

flow/layers/performance_overlay_layer.cc

@@ -2,11 +2,12 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+#include "flutter/flow/layers/performance_overlay_layer.h"
+
 #include <iomanip>
 #include <iostream>
 #include <string>
 
-#include "flutter/flow/layers/performance_overlay_layer.h"
 #include "third_party/skia/include/core/SkFont.h"
 #include "third_party/skia/include/core/SkTextBlob.h"
 

flow/layers/performance_overlay_layer_unittests.cc

@@ -4,6 +4,9 @@
 
 #include "flutter/flow/layers/performance_overlay_layer.h"
 
+#include <cstdint>
+#include <sstream>
+
 #include "flutter/flow/flow_test_utils.h"
 #include "flutter/flow/raster_cache.h"
 #include "flutter/flow/testing/layer_test.h"
@@ -18,9 +21,6 @@
 #include "third_party/skia/include/core/SkTextBlob.h"
 #include "third_party/skia/include/utils/SkBase64.h"
 
-#include <cstdint>
-#include <sstream>
-
 namespace flutter {
 namespace testing {
 namespace {

flow/layers/platform_view_layer_unittests.cc

@@ -3,6 +3,7 @@
 // found in the LICENSE file.
 
 #include "flutter/flow/layers/platform_view_layer.h"
+
 #include "flutter/flow/testing/layer_test.h"
 #include "flutter/flow/testing/mock_layer.h"
 #include "flutter/fml/macros.h"

flow/layers/shader_mask_layer.h

@@ -6,7 +6,6 @@
 #define FLUTTER_FLOW_LAYERS_SHADER_MASK_LAYER_H_
 
 #include "flutter/flow/layers/container_layer.h"
-
 #include "third_party/skia/include/core/SkShader.h"
 
 namespace flutter {

flow/matrix_decomposition_unittests.cc

@@ -4,9 +4,10 @@
 
 #define _USE_MATH_DEFINES
 
+#include "flutter/flow/matrix_decomposition.h"
+
 #include <cmath>
 
-#include "flutter/flow/matrix_decomposition.h"
 #include "gtest/gtest.h"
 
 namespace flutter {

flow/mutators_stack_unittests.cc

@@ -3,7 +3,6 @@
 // found in the LICENSE file.
 
 #include "flutter/flow/embedded_views.h"
-
 #include "gtest/gtest.h"
 
 namespace flutter {

flow/raster_cache_key.h

@@ -6,6 +6,7 @@
 #define FLUTTER_FLOW_RASTER_CACHE_KEY_H_
 
 #include <unordered_map>
+
 #include "flutter/flow/matrix_decomposition.h"
 #include "flutter/fml/logging.h"
 

flow/skia_gpu_object_unittests.cc

@@ -4,15 +4,15 @@
 
 #include "flutter/flow/skia_gpu_object.h"
 
+#include <future>
+
 #include "flutter/fml/message_loop.h"
 #include "flutter/fml/synchronization/waitable_event.h"
 #include "flutter/fml/task_runner.h"
 #include "flutter/testing/thread_test.h"
 #include "gtest/gtest.h"
 #include "third_party/skia/include/core/SkRefCnt.h"
 
-#include <future>
-
 namespace flutter {
 namespace testing {
 

flow/testing/mock_texture.h

@@ -2,12 +2,12 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "flutter/flow/texture.h"
-#include "flutter/testing/assertions_skia.h"
-
 #include <ostream>
 #include <vector>
 
+#include "flutter/flow/texture.h"
+#include "flutter/testing/assertions_skia.h"
+
 namespace flutter {
 namespace testing {
 

flow/texture_unittests.cc

@@ -2,9 +2,9 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "flutter/flow/testing/mock_texture.h"
 #include "flutter/flow/texture.h"
 
+#include "flutter/flow/testing/mock_texture.h"
 #include "gtest/gtest.h"
 
 namespace flutter {

fml/ascii_trie.cc

@@ -3,6 +3,7 @@
 // found in the LICENSE file.
 
 #include "flutter/fml/ascii_trie.h"
+
 #include "flutter/fml/logging.h"
 
 namespace fml {

fml/ascii_trie_unittests.cc

@@ -3,6 +3,7 @@
 // found in the LICENSE file.
 
 #include "flutter/fml/ascii_trie.h"
+
 #include "gtest/gtest.h"
 
 using fml::AsciiTrie;

fml/backtrace.cc

@@ -5,12 +5,12 @@
 #include "flutter/fml/backtrace.h"
 
 #include <cxxabi.h>
-#include <sstream>
-
 #include <dlfcn.h>
 #include <execinfo.h>
 #include <signal.h>
 
+#include <sstream>
+
 #include "flutter/fml/logging.h"
 
 namespace fml {

fml/backtrace_unittests.cc

@@ -3,6 +3,7 @@
 // found in the LICENSE file.
 
 #include "backtrace.h"
+
 #include "gtest/gtest.h"
 #include "logging.h"
 

fml/base32_unittest.cc

@@ -3,10 +3,11 @@
 // found in the LICENSE file.
 
 #include "flutter/fml/base32.h"
-#include "gtest/gtest.h"
 
 #include <iostream>
 
+#include "gtest/gtest.h"
+
 TEST(Base32Test, CanEncode) {
   {
     auto result = fml::Base32Encode("hello");

fml/delayed_task.h

@@ -5,11 +5,11 @@
 #ifndef FLUTTER_FML_DELAYED_TASK_H_
 #define FLUTTER_FML_DELAYED_TASK_H_
 
+#include <queue>
+
 #include "flutter/fml/closure.h"
 #include "flutter/fml/time/time_point.h"
 
-#include <queue>
-
 namespace fml {
 
 class DelayedTask {

fml/eintr_wrapper.h

@@ -5,10 +5,10 @@
 #ifndef FLUTTER_FML_EINTR_WRAPPER_H_
 #define FLUTTER_FML_EINTR_WRAPPER_H_
 
-#include "flutter/fml/build_config.h"
-
 #include <errno.h>
 
+#include "flutter/fml/build_config.h"
+
 #if defined(OS_WIN)
 
 // Windows has no concept of EINTR.

fml/file_unittest.cc

@@ -2,16 +2,16 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+#include <cstring>
 #include <memory>
 #include <vector>
 
-#include "gtest/gtest.h"
-
 #include "flutter/fml/build_config.h"
 #include "flutter/fml/file.h"
 #include "flutter/fml/mapping.h"
 #include "flutter/fml/paths.h"
 #include "flutter/fml/unique_fd.h"
+#include "gtest/gtest.h"
 
 static bool WriteStringToFile(const fml::UniqueFD& fd,
                               const std::string& contents) {

fml/hash_combine_unittests.cc

@@ -3,6 +3,7 @@
 // found in the LICENSE file.
 
 #include "flutter/fml/hash_combine.h"
+
 #include "flutter/testing/testing.h"
 
 namespace fml {

fml/log_settings.h

@@ -5,10 +5,10 @@
 #ifndef FLUTTER_FML_LOG_SETTINGS_H_
 #define FLUTTER_FML_LOG_SETTINGS_H_
 
-#include "flutter/fml/log_level.h"
-
 #include <string>
 
+#include "flutter/fml/log_level.h"
+
 namespace fml {
 
 // Settings which control the behavior of FML logging.

fml/memory/ref_ptr.h

@@ -8,7 +8,6 @@
 #define FLUTTER_FML_MEMORY_REF_PTR_H_
 
 #include <cstddef>
-
 #include <functional>
 #include <utility>
 

fml/memory/task_runner_checker_unittest.cc

@@ -4,15 +4,15 @@
 
 #define FML_USED_ON_EMBEDDER
 
-#include <gtest/gtest.h>
+#include "flutter/fml/memory/task_runner_checker.h"
 
 #include <thread>
-#include "flutter/fml/memory/task_runner_checker.h"
 
 #include "flutter/fml/message_loop.h"
 #include "flutter/fml/raster_thread_merger.h"
 #include "flutter/fml/synchronization/count_down_latch.h"
 #include "flutter/fml/synchronization/waitable_event.h"
+#include "gtest/gtest.h"
 
 namespace fml {
 namespace testing {

fml/memory/thread_checker.h

@@ -9,16 +9,15 @@
 #define FLUTTER_FML_MEMORY_THREAD_CHECKER_H_
 
 #include "flutter/fml/build_config.h"
+#include "flutter/fml/logging.h"
+#include "flutter/fml/macros.h"
 
 #if defined(OS_WIN)
 #include <windows.h>
 #else
 #include <pthread.h>
 #endif
 
-#include "flutter/fml/logging.h"
-#include "flutter/fml/macros.h"
-
 namespace fml {
 
 // A simple class that records the identity of the thread that it was created