Track connected subframes per-Document instead of per-Node.

third_party/WebKit/Source/core/dom/NodeRareData.cpp

Index: third_party/WebKit/Source/core/dom/NodeRareData.cpp
diff --git a/third_party/WebKit/Source/core/dom/NodeRareData.cpp b/third_party/WebKit/Source/core/dom/NodeRareData.cpp
index 7ed6f619db5caf937890194ec39b5b24c30e2dd6..da080bd65a8c35f74178a76f1e51164686e1eea6 100644
--- a/third_party/WebKit/Source/core/dom/NodeRareData.cpp
+++ b/third_party/WebKit/Source/core/dom/NodeRareData.cpp
@@ -73,13 +73,4 @@ void NodeRareData::finalizeGarbageCollectedObject()
         this->~NodeRareData();
 }
 
-void NodeRareData::incrementConnectedSubframeCount(unsigned amount)
-{
-    RELEASE_ASSERT_WITH_SECURITY_IMPLICATION((m_connectedFrameCount + amount) <= FrameHost::maxNumberOfFrames);
-    m_connectedFrameCount += amount;
-}
-
-// Ensure the 10 bits reserved for the m_connectedFrameCount cannot overflow
-static_assert(FrameHost::maxNumberOfFrames < (1 << NodeRareData::ConnectedFrameCountBits), "Frame limit should fit in rare data count");
-
 } // namespace blink