[Mac] Simplify getting page-action info-bubble point.

chrome/browser/cocoa/location_bar/autocomplete_text_field_cell.mm

Index: chrome/browser/cocoa/location_bar/autocomplete_text_field_cell.mm
diff --git a/chrome/browser/cocoa/location_bar/autocomplete_text_field_cell.mm b/chrome/browser/cocoa/location_bar/autocomplete_text_field_cell.mm
index 269a8978abf85e43a0747ed2aa1493b98ee0dce2..0b637c7390b1b940fb7d73b6c115a4c996b2729b 100644
--- a/chrome/browser/cocoa/location_bar/autocomplete_text_field_cell.mm
+++ b/chrome/browser/cocoa/location_bar/autocomplete_text_field_cell.mm
@@ -450,17 +450,6 @@ void CalculatePositionsInFrame(
   return NSZeroRect;
 }
 
-- (NSRect)pageActionFrameForExtensionAction:(ExtensionAction*)action
-                                    inFrame:(NSRect)cellFrame {
-  const size_t pageActionCount = [self pageActionCount];
-  size_t pos = 0;
-  while (pos < pageActionCount &&
-      action != page_action_views_->ViewAt(pos)->page_action())
-    ++pos;
-  return (pos == pageActionCount) ? NSZeroRect :
-      [self pageActionFrameForIndex:pos inFrame:cellFrame];
-}
-
 - (void)drawHintWithFrame:(NSRect)cellFrame inView:(NSView*)controlView {
   DCHECK(hintString_);