[Experiment] purge-and-suspend

third_party/WebKit/Source/core/paint/InlineTextBoxPainter.cpp

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "core/paint/InlineTextBoxPainter.h"
 
 #include "core/editing/CompositionUnderline.h"
 #include "core/editing/Editor.h"
 #include "core/editing/markers/DocumentMarkerController.h"
 #include "core/frame/LocalFrame.h"
@@ skipping 21 matching lines @@
         gTextBlobCache->remove(&inlineTextBox);
 }
 
 static TextBlobPtr* addToTextBlobCache(const InlineTextBox& inlineTextBox)
 {
     if (!gTextBlobCache)
         gTextBlobCache = new InlineTextBoxBlobCacheMap;
     return &gTextBlobCache->add(&inlineTextBox, nullptr).storedValue->value;
 }
 
+void InlineTextBoxPainter::invalidateTextBlobCache()
+{
+    delete gTextBlobCache;
+    gTextBlobCache = nullptr;
+}
+
 bool InlineTextBoxPainter::paintsMarkerHighlights(const LayoutObject& layoutObject)
 {
     return layoutObject.node() && layoutObject.document().markers().hasMarkers(layoutObject.node());
 }
 
 static bool paintsCompositionMarkers(const LayoutObject& layoutObject)
 {
     return layoutObject.node() && layoutObject.document().markers().markersFor(layoutObject.node(), DocumentMarker::Composition).size() > 0;
 }
 
@@ skipping 788 matching lines @@
     GraphicsContext& context = paintInfo.context;
     GraphicsContextStateSaver stateSaver(context);
 
     LayoutRect boxRect(boxOrigin, LayoutSize(m_inlineTextBox.logicalWidth(), m_inlineTextBox.logicalHeight()));
     context.clip(FloatRect(boxRect));
     context.drawHighlightForText(font, run, FloatPoint(boxOrigin), boxRect.height(), color, sPos, ePos);
 }
 
 
 } // namespace blink