Fix header guards in chrome/.

Generated mechanically as follows:

git ls-files '*.h' | grep -E '^chrome/' | \
    xargs parallel cpplint.py --filter=-,+build/header_guard -- 2>&1 | \
    grep build/header_guard | tools/apply_cpplint_header_guard.py

Bug: 1200694
Change-Id: Ia5973cd47e699a6dae5259fc294c3f61ec8a0990
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5052149
Reviewed-by: Ted Choc <[email protected]>
Reviewed-by: Lei Zhang <[email protected]>
Commit-Queue: Lei Zhang <[email protected]>
Cr-Commit-Position: refs/heads/main@{#1228137}
diff --git a/chrome/browser/download/download_item_web_app_data.h b/chrome/browser/download/download_item_web_app_data.h
index eb2196e7..5521e9f6 100644
--- a/chrome/browser/download/download_item_web_app_data.h
+++ b/chrome/browser/download/download_item_web_app_data.h
@@ -38,4 +38,4 @@
   webapps::AppId web_app_id_;
 };
 
-#endif  // __CHROMIUM_SRC_CHROME_BROWSER_DOWNLOAD_DOWNLOAD_ITEM_WEB_APP_DATA_H_
+#endif  // CHROME_BROWSER_DOWNLOAD_DOWNLOAD_ITEM_WEB_APP_DATA_H_