[iwyu] Fix includes in v8memory.h

R=titzer@chromium.org

Bug: v8:7754, v8:7965
Change-Id: I9389bc60eab8283d9b70a49a9a71c6d092146de0
Reviewed-on: https://chromium-review.googlesource.com/1158071Reviewed-by: Ben Titzer <titzer@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54836}

src/v8memory.h

@@ -5,6 +5,8 @@
 #ifndef V8_V8MEMORY_H_
 #define V8_V8MEMORY_H_
 
+#include "src/globals.h"
+
 namespace v8 {
 namespace internal {
 

tools/generate-header-include-checks.py

@@ -52,7 +52,6 @@ AUTO_EXCLUDE = [
   'src/snapshot/object-deserializer.h',
   'src/third_party/utf8-decoder/utf8-decoder.h',
   'src/transitions.h',
-  'src/v8memory.h',
 ]
 AUTO_EXCLUDE_PATTERNS = [
   'src/base/atomicops_internals_.*',