Add missing include in message_lite.cc

[jbrianceau]

This changes fixes "use of undeclared identifier 'INT_MAX'"
compilation error.

[grpc-kokoro]

Thanks for your pull request. The automated tests will run as soon as one of the admins verifies this change is ok for us to run on our infrastructure.

[grpc-kokoro]

Thanks for your pull request. The automated tests will run as soon as one of the admins verifies this change is ok for us to run on our infrastructure.

[acozzette]

Thanks, Julien. By the way, what was the build environment (i.e. compiler and platform) where you ran into this compiler error?

[jbrianceau]

I saw the error in Chromium try bots : https://codereview.chromium.org/2495533002/

See try bots results of Patch Set 2, for instance the linux_chromium_rel_ng (compile stdio) :

FAILED: newlib_pnacl/obj/third_party/protobuf/protobuf_lite/message_lite.o 
/b/c/cipd/goma/gomacc ../../native_client/toolchain/linux_x86/pnacl_newlib/bin/pnacl-clang++ -MMD -MF newlib_pnacl/obj/third_party/protobuf/protobuf_lite/message_lite.o.d -DNACL_TC_REV=f7d719122cd7c2fe3ebc52e7c0b011c583bf3e9c -DV8_DEPRECATION_WARNINGS -DENABLE_NOTIFICATIONS -DENABLE_PLUGINS=1 -DENABLE_PDF=1 -DENABLE_SPELLCHECK=1 -DDCHECK_ALWAYS_ON=1 -DUSE_OPENSSL_CERTS=1 -DNO_TCMALLOC -DENABLE_WEBRTC=1 -DENABLE_TASK_MANAGER=1 -DENABLE_THEMES=1 -DUSE_PROPRIETARY_CODECS -DFULL_SAFE_BROWSING -DSAFE_BROWSING_CSD -DSAFE_BROWSING_DB_LOCAL -DCHROMIUM_BUILD -DENABLE_MEDIA_ROUTER=1 -DFIELDTRIAL_TESTING_ENABLED -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -DNDEBUG -DNVALGRIND -DGOOGLE_PROTOBUF_NO_RTTI -DGOOGLE_PROTOBUF_NO_STATIC_INITIALIZER -DHAVE_PTHREAD -I../.. -Inewlib_pnacl/gen -I../../third_party/protobuf/src -fno-strict-aliasing -fcolor-diagnostics -O2 -fno-ident -fdata-sections -ffunction-sections -g1 -fvisibility=hidden -Werror -Wno-unused-variable -Wno-missing-field-initializers -Wno-unused-parameter -Wno-c++11-narrowing -Wno-covered-switch-default -Wno-deprecated-register -Wno-unneeded-internal-declaration -Wno-inconsistent-missing-override -Wno-unused-function -fno-threadsafe-statics -fvisibility-inlines-hidden -std=gnu++11 -fno-rtti -fno-exceptions -c ../../third_party/protobuf/src/google/protobuf/message_lite.cc -o newlib_pnacl/obj/third_party/protobuf/protobuf_lite/message_lite.o
../../third_party/protobuf/src/google/protobuf/message_lite.cc:247:14: error: use of undeclared identifier 'INT_MAX'
  if (size > INT_MAX) {
             ^
../../third_party/protobuf/src/google/protobuf/message_lite.cc:296:19: error: use of undeclared identifier 'INT_MAX'
  if (byte_size > INT_MAX) {
                  ^
2 errors generated.