Removing prefixMatch attribute of CacheQueryOptions.

As get removed in latest specs, removing it.
spec: https://slightlyoff.github.io/ServiceWorker/spec/service_worker/#cache-query-options-dictionary

PATCH 1: Chromium: [THIS PATCH]
PATCH 2: Blink: https://codereview.chromium.org/927723003/

BUG=462837

Review URL: https://codereview.chromium.org/941683002

Cr-Commit-Position: refs/heads/master@{#318842}

content/common/service_worker/service_worker_messages.h

@@ -75,7 +75,6 @@ IPC_STRUCT_TRAITS_BEGIN(content::ServiceWorkerCacheQueryParams)
   IPC_STRUCT_TRAITS_MEMBER(ignore_search)
   IPC_STRUCT_TRAITS_MEMBER(ignore_method)
   IPC_STRUCT_TRAITS_MEMBER(ignore_vary)
-  IPC_STRUCT_TRAITS_MEMBER(prefix_match)
   IPC_STRUCT_TRAITS_MEMBER(cache_name)
 IPC_STRUCT_TRAITS_END()
 

content/common/service_worker/service_worker_types.cc

@@ -74,8 +74,7 @@ ServiceWorkerResponse::~ServiceWorkerResponse() {}
 ServiceWorkerCacheQueryParams::ServiceWorkerCacheQueryParams()
     : ignore_search(false),
       ignore_method(false),
-      ignore_vary(false),
-      prefix_match(false) {}
+      ignore_vary(false) {}
 
 ServiceWorkerBatchOperation::ServiceWorkerBatchOperation() {}
 

content/common/service_worker/service_worker_types.h

@@ -149,7 +149,6 @@ struct CONTENT_EXPORT ServiceWorkerCacheQueryParams {
   bool ignore_search;
   bool ignore_method;
   bool ignore_vary;
-  bool prefix_match;
   base::string16 cache_name;
 };
 

content/renderer/service_worker/service_worker_cache_storage_dispatcher.cc

@@ -88,7 +88,6 @@ ServiceWorkerCacheQueryParams QueryParamsFromWebQueryParams(
   query_params.ignore_search = web_query_params.ignoreSearch;
   query_params.ignore_method = web_query_params.ignoreMethod;
   query_params.ignore_vary = web_query_params.ignoreVary;
-  query_params.prefix_match = web_query_params.prefixMatch;
   query_params.cache_name = web_query_params.cacheName;
   return query_params;
 }