[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 da4ad55da5b1c081add729780ce15ac690f786bc..22e0462b45fe97a13f322aa74fae3c4116c4dbcd 100644
--- a/third_party/WebKit/Source/core/fetch/Resource.cpp
+++ b/third_party/WebKit/Source/core/fetch/Resource.cpp
@@ -30,6 +30,7 @@
 #include "core/fetch/ResourceClient.h"
 #include "core/fetch/ResourceClientOrObserverWalker.h"
 #include "core/fetch/ResourceLoader.h"
+#include "core/fetch/ScriptResource.h"
 #include "core/inspector/InstanceCounters.h"
 #include "platform/Histogram.h"
 #include "platform/Logging.h"
@@ -109,6 +110,8 @@ 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 +183,11 @@ 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)
@@ -831,6 +839,8 @@ void Resource::finishPendingClients()
 void Resource::prune()
 {
     destroyDecodedDataIfPossible();
+    if (m_cacheHandler)
+        m_cacheHandler->prune();
     unlock();
 }