Make ResourceFetcher::m_documentResources use WeakPtr

third_party/WebKit/Source/core/fetch/ResourceFetcher.h

Index: third_party/WebKit/Source/core/fetch/ResourceFetcher.h
diff --git a/third_party/WebKit/Source/core/fetch/ResourceFetcher.h b/third_party/WebKit/Source/core/fetch/ResourceFetcher.h
index 992bc497ca0cc6ca90156e083199e1fc66c0a984..5b1eab060e4c1019819d371e719ad612bd63d864 100644
--- a/third_party/WebKit/Source/core/fetch/ResourceFetcher.h
+++ b/third_party/WebKit/Source/core/fetch/ResourceFetcher.h
@@ -78,7 +78,7 @@ public:
 
     Resource* cachedResource(const KURL&) const;
 
-    typedef HashMap<String, ResourcePtr<Resource>> DocumentResourceMap;
+    typedef WillBeHeapHashMap<String, WeakPtrWillBeWeakMember<Resource>> DocumentResourceMap;
     const DocumentResourceMap& allResources() const { return m_documentResources; }
 
     bool autoLoadImages() const { return m_autoLoadImages; }
@@ -91,8 +91,6 @@ public:
     FetchContext& context() const { return m_context ? *m_context.get() : FetchContext::nullInstance(); }
     void clearContext() { m_context.clear(); }
 
-    void garbageCollectDocumentResources();
-
     int requestCount() const;
 
     bool isPreloaded(const KURL&) const;
@@ -174,8 +172,6 @@ private:
 
     static bool resourceNeedsLoad(Resource*, const FetchRequest&, RevalidationPolicy);
 
-    void garbageCollectDocumentResourcesTimerFired(Timer<ResourceFetcher>*);
-
     void resourceTimingReportTimerFired(Timer<ResourceFetcher>*);
 
     void reloadImagesIfNotDeferred();
@@ -197,7 +193,6 @@ private:
     OwnPtrWillBeMember<WillBeHeapListHashSet<RawPtrWillBeMember<Resource>>> m_preloads;
     OwnPtrWillBeMember<ArchiveResourceCollection> m_archiveResourceCollection;
 
-    Timer<ResourceFetcher> m_garbageCollectDocumentResourcesTimer;
     Timer<ResourceFetcher> m_resourceTimingReportTimer;
 
     // We intentionally use a Member instead of a ResourcePtr.