[Mac] Simplify field editor code which tracks whether editor rect changed.

chrome/browser/cocoa/autocomplete_text_field_cell.h

Index: chrome/browser/cocoa/autocomplete_text_field_cell.h
diff --git a/chrome/browser/cocoa/autocomplete_text_field_cell.h b/chrome/browser/cocoa/autocomplete_text_field_cell.h
index fdf4e1e2add0b51f1e1561b7b4655febf458ee8b..e158e4adcf0fd8a350c9dee79517778467632ad0 100644
--- a/chrome/browser/cocoa/autocomplete_text_field_cell.h
+++ b/chrome/browser/cocoa/autocomplete_text_field_cell.h
@@ -15,14 +15,6 @@
 // on the right-hand side), the keyword hint ("Press [Tab] to search
 // Engine" on the right-hand side), and keyword mode ("Search Engine:"
 // in a button-like token on the left-hand side).
-//
-// The cell arranges the field-editor's placement via the standard
-// -editWithFrame:* and -selectWithFrame:* methods.  When the visible
-// decoration changes, the cell's look may change, and if the cell is
-// currently being edited the field editor will require adjustment.
-// The cell signals this requirement by returning YES for
-// -fieldEditorNeedsReset, which is used by AutocompleteTextField's
-// -resetFieldEditorFrameIfNeeded in testing if re-layout is needed.
 
 @interface AutocompleteTextFieldCell : NSTextFieldCell {
  @private
@@ -34,10 +26,6 @@
   // side of the field.  Exclusive WRT |keywordString_|;
   scoped_nsobject<NSAttributedString> hintString_;
 
-  // YES if the info cell has been changed in a way which would result
-  // in the cell needing to be laid out again.
-  BOOL fieldEditorNeedsReset_;
-
   // Icon that represents the state of the SSL connection
   scoped_nsobject<NSImage> hintIcon_;
 
@@ -47,12 +35,6 @@
   scoped_nsobject<NSAttributedString> hintIconLabel_;
 }
 
-@property BOOL fieldEditorNeedsReset;
-
-// The following setup |keywordString_| or |hintString_| based on the
-// input, and set |fieldEditorNeedsReset_| if the layout of the field
-// changed.
-
 // Chooses |partialString| if |width| won't fit |fullString|.  Strings
 // must be non-nil.
 - (void)setKeywordString:(NSString*)fullString