[WeakMemoryCache 1a] Make Reference from Inspector to Resource weak, remove removedFromMemoryCache()

third_party/WebKit/Source/core/css/CSSStyleSheetResourceTest.cpp

Index: third_party/WebKit/Source/core/css/CSSStyleSheetResourceTest.cpp
diff --git a/third_party/WebKit/Source/core/css/CSSStyleSheetResourceTest.cpp b/third_party/WebKit/Source/core/css/CSSStyleSheetResourceTest.cpp
index 8ee2ea54cf450aa244e7d7fcbf8905883991d589..ea7efd9f2d96287c5c1c737280096b9b37d1c714 100644
--- a/third_party/WebKit/Source/core/css/CSSStyleSheetResourceTest.cpp
+++ b/third_party/WebKit/Source/core/css/CSSStyleSheetResourceTest.cpp
@@ -23,6 +23,7 @@
 #include "core/fetch/ResourceFetcher.h"
 #include "core/testing/DummyPageHolder.h"
 #include "platform/heap/Handle.h"
+#include "platform/heap/Heap.h"
 #include "platform/network/ResourceRequest.h"
 #include "platform/testing/URLTestHelpers.h"
 #include "platform/testing/UnitTestHelpers.h"
@@ -134,19 +135,25 @@ TEST_F(CSSStyleSheetResourceTest, DuplicateResourceNotCached)
     cssResource->responseReceived(ResourceResponse(cssURL, "style/css", 0, nullAtom, String()), nullptr);
     cssResource->finish();
 
-    StyleSheetContents* contents = StyleSheetContents::create(CSSParserContext(HTMLStandardMode, nullptr));
+    Persistent<StyleSheetContents> contents = StyleSheetContents::create(CSSParserContext(HTMLStandardMode, nullptr));
     CSSStyleSheet* sheet = CSSStyleSheet::create(contents, document());
     EXPECT_TRUE(sheet);
 
     contents->checkLoaded();
     cssResource->saveParsedStyleSheet(contents);
+    ASSERT_TRUE(contents->isReferencedFromResource());
 
     // Verify that the cache will have a mapping for |imageResource| at |url|.
-    // The underlying |contents| for the stylesheet resource must have a
-    // matching cache status.
     ASSERT_TRUE(memoryCache()->contains(imageResource));
     ASSERT_FALSE(memoryCache()->contains(cssResource));
-    ASSERT_FALSE(contents->isInMemoryCache());
+
+    // Destruct |*cssResource|.
+    cssResource = nullptr;
+    ThreadHeap::collectAllGarbage();
+
+    // The underlying |contents| for the stylesheet resource must have a
+    // matching reference status.
+    ASSERT_FALSE(contents->isReferencedFromResource());
 }
 
 } // namespace