[Experiment] purge-and-suspend

third_party/WebKit/Source/core/fetch/Resource.cpp

Index: third_party/WebKit/Source/core/fetch/Resource.cpp
diff --git a/third_party/WebKit/Source/core/fetch/Resource.cpp b/third_party/WebKit/Source/core/fetch/Resource.cpp
index 20b69e38de6bd385ea801e11c98a8aafe177faef..0ff2bb809716f64697148de0abb1fc729df91eb5 100644
--- a/third_party/WebKit/Source/core/fetch/Resource.cpp
+++ b/third_party/WebKit/Source/core/fetch/Resource.cpp
@@ -109,6 +109,8 @@ public:
     // Sets the serialized metadata retrieved from the platform's cache.
     void setSerializedCachedMetadata(const char*, size_t);
 
+    void prune() override;
+
 protected:
     explicit CachedMetadataHandlerImpl(Resource*);
     virtual void sendToPlatform();
@@ -180,6 +182,11 @@ void Resource::CachedMetadataHandlerImpl::sendToPlatform()
     }
 }
 
+void Resource::CachedMetadataHandlerImpl::prune()
+{
+    clearCachedMetadata(CachedMetadataHandler::CacheLocally);
+}
+
 class Resource::ServiceWorkerResponseCachedMetadataHandler : public Resource::CachedMetadataHandlerImpl {
 public:
     static Resource::CachedMetadataHandlerImpl* create(Resource* resource, SecurityOrigin* securityOrigin)
@@ -828,6 +835,8 @@ void Resource::finishPendingClients()
 void Resource::prune()
 {
     destroyDecodedDataIfPossible();
+    if (m_cacheHandler)
+        m_cacheHandler->prune();
     unlock();
 }