[iwyu] Better error checking in script (#31957)

* fff

* fff

* fff

* better error checking

* x

* fix

* Automated change: Fix sanity tests

Co-authored-by: ctiller <ctiller@users.noreply.github.com>

src/core/BUILD

@@ -1390,6 +1390,7 @@ grpc_cc_library(
     external_deps = [
         "absl/functional:any_invocable",
         "absl/status",
+        "absl/status:statusor",
     ],
     deps = [
         "//:event_engine_base_hdrs",

src/core/lib/event_engine/posix.h

@@ -16,16 +16,15 @@
 
 #include <grpc/support/port_platform.h>
 
-#include <functional>
-#include <vector>
+#include <memory>
 
 #include "absl/functional/any_invocable.h"
 #include "absl/status/status.h"
+#include "absl/status/statusor.h"
 
 #include <grpc/event_engine/endpoint_config.h>
 #include <grpc/event_engine/event_engine.h>
 #include <grpc/event_engine/memory_allocator.h>
-#include <grpc/event_engine/port.h>
 #include <grpc/event_engine/slice_buffer.h>
 
 namespace grpc_event_engine {

test/core/client_channel/lb_policy/round_robin_test.cc

@@ -16,13 +16,15 @@
 
 #include <stddef.h>
 
+#include <array>
+
 #include "absl/status/status.h"
 #include "absl/strings/string_view.h"
+#include "absl/types/span.h"
 #include "gtest/gtest.h"
 
 #include <grpc/grpc.h>
 
-#include "src/core/lib/channel/channel_args.h"
 #include "src/core/lib/gprpp/orphanable.h"
 #include "src/core/lib/gprpp/ref_counted_ptr.h"
 #include "src/core/lib/load_balancing/lb_policy.h"

tools/dockerfile/grpc_iwyu/iwyu.sh

@@ -42,10 +42,22 @@ git clone https://github.com/include-what-you-use/include-what-you-use.git iwyu
 # latest commit on the clang 15 branch
 cd ${IWYU_ROOT}/iwyu
 git checkout 7f0b6c304acf69c42bb7f6e03c63f836924cb7e0
+if [ $? -ne 0 ]; then
+  echo "Failed to checkout iwyu commit"
+  exit 1
+fi
 mkdir -p ${IWYU_ROOT}/iwyu_build
 cd ${IWYU_ROOT}/iwyu_build
 cmake -G "Unix Makefiles" -DCMAKE_C_COMPILER=clang -DCMAKE_CXX_COMPILER=clang++ -DLLVM_ROOT_DIR=/usr/lib/llvm-15 ${IWYU_ROOT}/iwyu 
+if [ $? -ne 0 ]; then
+  echo "Failed to cmake iwyu"
+  exit 1
+fi
 make -j $CPU_COUNT
+if [ $? -ne 0 ]; then
+  echo "Failed to make iwyu"
+  exit 1
+fi
 cd ${IWYU_ROOT}
 
 # patch python shebang for our environment (we need python3, not python)