Revert of Move FrameHost::m_subframeCount to Page

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

Index: third_party/WebKit/Source/core/page/Page.h
diff --git a/third_party/WebKit/Source/core/page/Page.h b/third_party/WebKit/Source/core/page/Page.h
index 24616cb5c723210962dcc08062faa1e176e25124..738c031e95a88ebf574aa2d56e51e3c517efac3f 100644
--- a/third_party/WebKit/Source/core/page/Page.h
+++ b/third_party/WebKit/Source/core/page/Page.h
@@ -235,18 +235,6 @@
   bool isCursorVisible() const;
   void setIsCursorVisible(bool isVisible) { m_isCursorVisible = isVisible; }
 
-  // Don't allow more than a certain number of frames in a page.
-  // This seems like a reasonable upper bound, and otherwise mutually
-  // recursive frameset pages can quickly bring the program to its knees
-  // with exponential growth in the number of frames.
-  static const int maxNumberOfFrames = 1000;
-  void incrementSubframeCount() { ++m_subframeCount; }
-  void decrementSubframeCount() {
-    DCHECK_GT(m_subframeCount, 0);
-    --m_subframeCount;
-  }
-  int subframeCount() const;
-
   void setDefaultPageScaleLimits(float minScale, float maxScale);
   void setUserAgentPageScaleConstraints(
       const PageScaleConstraints& newConstraints);
@@ -338,8 +326,6 @@
   bool m_isPainting = false;
 #endif
 
-  int m_subframeCount;
-
   // A pointer to all the interfaces provided to in-process Frames for this
   // Page.
   // FIXME: Most of the members of Page should move onto FrameHost.