[Mac] Tweaks to Omnibox metrics.

chrome/browser/cocoa/autocomplete_text_field_cell.mm

 // Copyright (c) 2009 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #import "chrome/browser/cocoa/autocomplete_text_field_cell.h"
 
 #import "base/logging.h"
 #import "third_party/GTM/AppKit/GTMTheme.h"
 
 namespace {
@@ skipping 143 matching lines @@
 
     fieldEditorNeedsReset_ = YES;
   }
 }
 
 - (void)drawWithFrame:(NSRect)cellFrame inView:(NSView*)controlView {
   DCHECK([controlView isFlipped]);
   [[NSColor colorWithCalibratedWhite:1.0 alpha:0.25] set];
   NSFrameRectWithWidthUsingOperation(cellFrame,  1, NSCompositeSourceOver);
 
+  // TODO(shess): This inset is also reflected in ToolbarController
+  // -autocompletePopupPosition.
   NSRect frame = NSInsetRect(cellFrame, 0, 1);
   [[self backgroundColor] setFill];
   NSRect innerFrame = NSInsetRect(frame, 1, 1);
   NSRectFill(innerFrame);
 
   NSRect shadowFrame, restFrame;
   NSDivideRect(innerFrame, &shadowFrame, &restFrame, 1, NSMinYEdge);
 
   BOOL isMainWindow = [[controlView window] isMainWindow];
   GTMTheme *theme = [controlView gtm_theme];
@@ skipping 118 matching lines @@
                   start:(NSInteger)selStart
                  length:(NSInteger)selLength {
   [super selectWithFrame:[self textFrameForFrame:cellFrame]
                   inView:controlView editor:textObj
                 delegate:anObject
                    start:selStart
                   length:selLength];
 }
 
 @end