[Fetch API] Reflect spec changes of bodyUsed property

third_party/WebKit/Source/modules/cachestorage/Cache.cpp

Index: third_party/WebKit/Source/modules/cachestorage/Cache.cpp
diff --git a/third_party/WebKit/Source/modules/cachestorage/Cache.cpp b/third_party/WebKit/Source/modules/cachestorage/Cache.cpp
index cb21eba331c121fba59b8aee29da94e1f3d1d036..c64ad7d842440a462a7d9e9136850e0c51863ba8 100644
--- a/third_party/WebKit/Source/modules/cachestorage/Cache.cpp
+++ b/third_party/WebKit/Source/modules/cachestorage/Cache.cpp
@@ -495,20 +495,13 @@ ScriptPromise Cache::putImpl(ScriptState* scriptState, const HeapVector<Member<R
             barrierCallback->onError("Request method '" + requests[i]->method() + "' is unsupported");
             return promise;
         }
-        if (requests[i]->hasBody() && requests[i]->bodyUsed()) {
-            barrierCallback->onError("Request body is already used");
-            return promise;
-        }
-        if (responses[i]->hasBody() && responses[i]->bodyUsed()) {
+        ASSERT(!requests[i]->hasBody());
+
+        if (responses[i]->isBodyLocked() || responses[i]->bodyUsed()) {
             barrierCallback->onError("Response body is already used");
             return promise;
         }
 
-        if (requests[i]->hasBody())
-            requests[i]->setBodyPassed();
-        if (responses[i]->hasBody())
-            responses[i]->setBodyPassed();
-
         BodyStreamBuffer* buffer = responses[i]->internalBodyBuffer();
         if (buffer) {
             // If the response has body, read the all data and create