[Mac] Tweaks to Omnibox metrics.

chrome/browser/autocomplete/autocomplete_popup_view_mac.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.
 
 #include "chrome/browser/autocomplete/autocomplete_popup_view_mac.h"
 
 #include "app/gfx/text_elider.h"
 #include "base/sys_string_conversions.h"
 #include "base/gfx/rect.h"
 #include "chrome/browser/autocomplete/autocomplete_edit.h"
 #include "chrome/browser/autocomplete/autocomplete_edit_view_mac.h"
 #include "chrome/browser/autocomplete/autocomplete_popup_model.h"
 #include "chrome/browser/cocoa/event_utils.h"
 #include "chrome/browser/cocoa/nsimage_cache.h"
 
 namespace {
 
 // The size delta between the font used for the edit and the result
 // rows.
 const int kEditFontAdjust = -1;
 
 // How much to adjust the cell sizing up from the default determined
 // by the font.
 const int kCellHeightAdjust = 7.0;
 
 // How to round off the popup's corners.  Goal is to match star and go
 // buttons.
-const CGFloat kPopupRoundingRadius = 4.0;
+const CGFloat kPopupRoundingRadius = 3.5;
+
+// Gap between the field and the popup.
+const CGFloat kPopupFieldGap = 2.0;
 
 // How much space to leave for the left and right margins.
 const CGFloat kLeftRightMargin = 8.0;
 
 // How far to offset the text column from the left.
 const CGFloat kTextXOffset = 33.0;
 
 // Animation duration when animating the popup window smaller.
 const float kShrinkAnimationDuration = 0.1;
 
@@ skipping 310 matching lines @@
   const NSSize cellSize = [[matrix cellAtRow:0 column:0] cellSize];
   DCHECK_GT(cellSize.height, 0.0);
   [matrix setCellSize:NSMakeSize(r.size.width,
                                  cellSize.height + kCellHeightAdjust)];
 
   // Make the matrix big enough to hold all the cells.
   [matrix sizeToCells];
 
   // Make the window just as big.
   r.size.height = [matrix frame].size.height;
-  r.origin.y -= r.size.height + 2;
+  r.origin.y -= r.size.height + kPopupFieldGap;
 
   // Update the selection.
   PaintUpdatesNow();
 
   // Animate the frame change if the only change is that the height got smaller.
   // Otherwise, resize immediately.
   NSRect oldFrame = [popup_ frame];
   if (r.size.height < oldFrame.size.height &&
       r.origin.x == oldFrame.origin.x &&
       r.size.width == oldFrame.size.width) {
@@ skipping 230 matching lines @@
   DCHECK(popup_view_);
 
   // TODO(shess): UpdatePopupAppearance() is called frequently, so it
   // should be really cheap, but in this case we could probably make
   // things even cheaper by refactoring between the popup-placement
   // code and the matrix-population code.
   popup_view_->UpdatePopupAppearance();
 }
 
 @end