Clean up remaining unused globals (on mac).

chrome/browser/ui/cocoa/location_bar/autocomplete_text_field_cell_unittest.mm

 // Copyright (c) 2011 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 <Cocoa/Cocoa.h>
 
 #include "base/mac/scoped_nsobject.h"
 #include "base/strings/utf_string_conversions.h"
 #import "chrome/browser/ui/cocoa/cocoa_test_helper.h"
 #import "chrome/browser/ui/cocoa/location_bar/autocomplete_text_field.h"
@@ skipping 15 matching lines @@
 using ::testing::Return;
 using ::testing::StrictMock;
 using ::testing::_;
 
 namespace {
 
 // Width of the field so that we don't have to ask |field_| for it all
 // the time.
 const CGFloat kWidth(300.0);
 
-// A narrow width for tests which test things that don't fit.
-const CGFloat kNarrowWidth(5.0);
-
 class MockDecoration : public LocationBarDecoration {
  public:
   virtual CGFloat GetWidthForSpace(CGFloat width) { return 20.0; }
 
   MOCK_METHOD2(DrawInFrame, void(NSRect frame, NSView* control_view));
   MOCK_METHOD0(GetToolTip, NSString*());
 };
 
 class AutocompleteTextFieldCellTest : public CocoaTest {
  public:
@@ skipping 243 matching lines @@
   // |controlView| gets the tooltip for the left decoration.
   id controlView = [OCMockObject mockForClass:[AutocompleteTextField class]];
   [[controlView expect] addToolTip:tooltip forRect:leftDecorationRect];
 
   [cell updateToolTipsInRect:bounds ofView:controlView];
 
   EXPECT_OCMOCK_VERIFY(controlView);
 }
 
 }  // namespace