Avoid MemoryCache eviction of preloaded resources with devtools open

third_party/WebKit/Source/core/inspector/InspectorNetworkAgent.cpp

Index: third_party/WebKit/Source/core/inspector/InspectorNetworkAgent.cpp
diff --git a/third_party/WebKit/Source/core/inspector/InspectorNetworkAgent.cpp b/third_party/WebKit/Source/core/inspector/InspectorNetworkAgent.cpp
index 0d22826cc5ccf8266efffbd9138a7421c86034c5..8ea886b282b3daad7649a9a3ac3a80688445c7b5 100644
--- a/third_party/WebKit/Source/core/inspector/InspectorNetworkAgent.cpp
+++ b/third_party/WebKit/Source/core/inspector/InspectorNetworkAgent.cpp
@@ -1373,7 +1373,7 @@ void InspectorNetworkAgent::didCommitLoad(LocalFrame* frame,
     return;
 
   if (m_state->booleanProperty(NetworkAgentState::cacheDisabled, false))
-    memoryCache()->evictResources();
+    memoryCache()->evictResources(MemoryCache::DoNotEvictUnusedPreloads);
 
   m_resourcesData->clear(IdentifiersFactory::loaderId(loader));
 }