[Devtools] Fixed devtools altering srcset image after close

third_party/WebKit/Source/web/WebViewImpl.cpp

 /*
  * Copyright (C) 2011, 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 31 matching lines @@
 #include "core/editing/Editor.h"
 #include "core/editing/FrameSelection.h"
 #include "core/editing/InputMethodController.h"
 #include "core/editing/iterators/TextIterator.h"
 #include "core/editing/markers/DocumentMarkerController.h"
 #include "core/editing/serializers/HTMLInterchange.h"
 #include "core/editing/serializers/Serialization.h"
 #include "core/events/KeyboardEvent.h"
 #include "core/events/UIEventWithKeyState.h"
 #include "core/events/WheelEvent.h"
+#include "core/fetch/MemoryCache.h"
 #include "core/fetch/UniqueIdentifier.h"
 #include "core/frame/BrowserControls.h"
 #include "core/frame/EventHandlerRegistry.h"
 #include "core/frame/FrameHost.h"
 #include "core/frame/FrameView.h"
 #include "core/frame/LocalFrame.h"
 #include "core/frame/PageScaleConstraintsSet.h"
 #include "core/frame/RemoteFrame.h"
 #include "core/frame/Settings.h"
 #include "core/frame/SmartClip.h"
@@ skipping 3386 matching lines @@
 }
 
 unsigned long WebViewImpl::createUniqueIdentifierForRequest() {
   return createUniqueIdentifier();
 }
 
 void WebViewImpl::setCompositorDeviceScaleFactorOverride(
     float deviceScaleFactor) {
   if (m_compositorDeviceScaleFactorOverride == deviceScaleFactor)
     return;
+  memoryCache()->evictResources();

[dgozman, 2016/12/14 20:05:39]

This is a strange place for evicting from memory cache. Why does compositor
scale have anything to do with it?

I'd rather move it back.

   m_compositorDeviceScaleFactorOverride = deviceScaleFactor;
   if (m_zoomFactorForDeviceScaleFactor) {
     setZoomLevel(zoomLevel());
     return;
   }
   if (page() && m_layerTreeView)
     updateLayerTreeDeviceScaleFactor();
 }
 
 void WebViewImpl::setDeviceEmulationTransform(
@@ skipping 746 matching lines @@
   if (focusedFrame->localFrameRoot() != mainFrameImpl()->frame())
     return nullptr;
   return focusedFrame;
 }
 
 LocalFrame* WebViewImpl::focusedLocalFrameAvailableForIme() const {
   return m_imeAcceptEvents ? focusedLocalFrameInWidget() : nullptr;
 }
 
 }  // namespace blink