Remove the MSAA WebSetting, which is not read or used.

third_party/WebKit/Source/core/frame/Settings.h

Index: third_party/WebKit/Source/core/frame/Settings.h
diff --git a/third_party/WebKit/Source/core/frame/Settings.h b/third_party/WebKit/Source/core/frame/Settings.h
index a55c0773db7234ec6425062891564f6ff331c0a1..2adf9474e33d8545142082d9dafd394142bcd635 100644
--- a/third_party/WebKit/Source/core/frame/Settings.h
+++ b/third_party/WebKit/Source/core/frame/Settings.h
@@ -67,11 +67,6 @@ public:
     static void setMockScrollbarsEnabled(bool flag);
     static bool mockScrollbarsEnabled();
 
-    // FIXME: naming_utilities.py isn't smart enough to handle OpenGL yet.
-    // It could handle "GL", but that seems a bit overly broad.
-    void setOpenGLMultisamplingEnabled(bool flag);
-    bool openGLMultisamplingEnabled() { return m_openGLMultisamplingEnabled; }
-
     void setDelegate(SettingsDelegate*);
 
 private:
@@ -82,7 +77,6 @@ private:
     SettingsDelegate* m_delegate;
 
     GenericFontFamilySettings m_genericFontFamilySettings;
-    bool m_openGLMultisamplingEnabled : 1;
     IntSize m_textAutosizingWindowSizeOverride;
     bool m_textAutosizingEnabled : 1;