Rename renderer to layoutObject in core/editing.

Source/core/editing/EditingBehavior.cpp

Index: Source/core/editing/EditingBehavior.cpp
diff --git a/Source/core/editing/EditingBehavior.cpp b/Source/core/editing/EditingBehavior.cpp
index fea7d98e53d1b5668eaf6dae49c789291c7225e1..3b5f5dbfe5b25fa7ee30fd4b05e11accdd529a3e 100644
--- a/Source/core/editing/EditingBehavior.cpp
+++ b/Source/core/editing/EditingBehavior.cpp
@@ -49,7 +49,7 @@ static const unsigned OptionKey  = AltKey;
 // Do not use this constant for anything but cursor movement commands. Keys
 // with cmd set have their |isSystemKey| bit set, so chances are the shortcut
 // will not be executed. Another, less important, reason is that shortcuts
-// defined in the renderer do not blink the menu item that they triggered. See
+// defined in the layoutObject do not blink the menu item that they triggered. See
 // http://crbug.com/25856 and the bugs linked from there for details.
 static const unsigned CommandKey = MetaKey;
 #endif