Revert of Move FrameHost::m_subframeCount to Page

third_party/WebKit/Source/core/page/Page.cpp

Index: third_party/WebKit/Source/core/page/Page.cpp
diff --git a/third_party/WebKit/Source/core/page/Page.cpp b/third_party/WebKit/Source/core/page/Page.cpp
index d8c2dfa769ffdfa66e2c35d5991748887a5ee653..0aa6889799c7803c12dd4efcd087669cca815225 100644
--- a/third_party/WebKit/Source/core/page/Page.cpp
+++ b/third_party/WebKit/Source/core/page/Page.cpp
@@ -120,7 +120,6 @@
       m_deviceScaleFactor(1),
       m_visibilityState(PageVisibilityStateVisible),
       m_isCursorVisible(true),
-      m_subframeCount(0),
       m_frameHost(FrameHost::create(*this)) {
   ASSERT(m_editorClient);
 
@@ -387,25 +386,6 @@
 
 bool Page::isCursorVisible() const {
   return m_isCursorVisible;
-}
-
-#if DCHECK_IS_ON()
-void checkFrameCountConsistency(int expectedFrameCount, Frame* frame) {
-  DCHECK_GE(expectedFrameCount, 0);
-
-  int actualFrameCount = 0;
-  for (; frame; frame = frame->tree().traverseNext())
-    ++actualFrameCount;
-
-  DCHECK_EQ(expectedFrameCount, actualFrameCount);
-}
-#endif
-
-int Page::subframeCount() const {
-#if DCHECK_IS_ON()
-  checkFrameCountConsistency(m_subframeCount + 1, mainFrame());
-#endif
-  return m_subframeCount;
 }
 
 void Page::settingsChanged(SettingsDelegate::ChangeType changeType) {