Disable drawing recorder cache for carets

Source/platform/graphics/paint/DrawingRecorder.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 "config.h"
 #include "platform/graphics/paint/DrawingRecorder.h"
 
 #include "platform/RuntimeEnabledFeatures.h"
 #include "platform/graphics/GraphicsContext.h"
 #include "platform/graphics/GraphicsLayer.h"
 #include "platform/graphics/paint/CachedDisplayItem.h"
 #include "platform/graphics/paint/DisplayItemList.h"
 #include "platform/graphics/paint/DrawingDisplayItem.h"
 #include "third_party/skia/include/core/SkPicture.h"
 
 namespace blink {
 
 #if ENABLE(ASSERT)
 static bool s_inDrawingRecorder = false;
 #endif
 
-DrawingRecorder::DrawingRecorder(GraphicsContext* context, const DisplayItemClient displayItemClient, DisplayItem::Type displayItemType, const FloatRect& bounds)
+DrawingRecorder::DrawingRecorder(GraphicsContext* context, const DisplayItemClient displayItemClient, DisplayItem::Type displayItemType, const FloatRect& bounds, CachePolicy cachePolicy)
     : m_context(context)
     , m_displayItemClient(displayItemClient)
     , m_displayItemType(displayItemType)
     , m_bounds(bounds)
     , m_canUseCachedDrawing(false)
 {
     if (!RuntimeEnabledFeatures::slimmingPaintEnabled())
         return;
 
 #if ENABLE(ASSERT)
     ASSERT(!s_inDrawingRecorder);
     s_inDrawingRecorder = true;
 #endif
 
-    m_canUseCachedDrawing = context->displayItemList()->clientCacheIsValid(displayItemClient);
+    if (cachePolicy != DisableCache)
+        m_canUseCachedDrawing = context->displayItemList()->clientCacheIsValid(displayItemClient);
+
     // FIXME: beginRecording only if !m_canUseCachedDrawing or ENABLE(ASSERT)
     // after all painters call canUseCachedDrawing().
     m_context->beginRecording(bounds);
 }
 
 DrawingRecorder::~DrawingRecorder()
 {
     if (!RuntimeEnabledFeatures::slimmingPaintEnabled())
         return;
 
@@ skipping 24 matching lines @@
 }
 
 #ifndef NDEBUG
 void DrawingRecorder::setClientDebugString(const WTF::String& clientDebugString)
 {
     m_clientDebugString = clientDebugString;
 }
 #endif
 
 } // namespace blink