Cache API should not match() HEAD requests

content/browser/cache_storage/cache_storage_cache.cc

Index: content/browser/cache_storage/cache_storage_cache.cc
diff --git a/content/browser/cache_storage/cache_storage_cache.cc b/content/browser/cache_storage/cache_storage_cache.cc
index caff0ac893174cb5b10631797e93c6197c343489..4cdae529e980460d059165a1745a7f85ef734ab2 100644
--- a/content/browser/cache_storage/cache_storage_cache.cc
+++ b/content/browser/cache_storage/cache_storage_cache.cc
@@ -596,6 +596,13 @@ void CacheStorageCache::QueryCache(
     return;
   }
 
+  if (!options.ignore_method && request && !request->method.empty() &&
+      request->method != "GET") {
+    callback.Run(CACHE_STORAGE_OK, base::MakeUnique<QueryCacheResults>(
+                                       std::move(request), options, callback));
+    return;
+  }
+
   std::unique_ptr<QueryCacheResults> query_cache_results(
       new QueryCacheResults(std::move(request), options, callback));
   OpenAllEntries(base::Bind(&CacheStorageCache::QueryCacheDidOpenAllEntries,
@@ -702,6 +709,13 @@ void CacheStorageCache::MatchImpl(
     return;
   }
 
+  if (!request->method.empty() && request->method != "GET") {
+    callback.Run(CACHE_STORAGE_ERROR_NOT_FOUND,
+                 std::unique_ptr<ServiceWorkerResponse>(),
+                 std::unique_ptr<storage::BlobDataHandle>());
+    return;
+  }
+
   std::unique_ptr<disk_cache::Entry*> scoped_entry_ptr(
       new disk_cache::Entry*());
   disk_cache::Entry** entry_ptr = scoped_entry_ptr.get();