Move FindPasteboard to ui/base/cocoa since it's used by two modules (content+chrome).

chrome/browser/ui/cocoa/location_bar/autocomplete_text_field_editor.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 "chrome/browser/ui/cocoa/location_bar/autocomplete_text_field_editor.h"
 
 #include "base/string_util.h"
 #include "base/sys_string_conversions.h"
 #include "chrome/app/chrome_command_ids.h"  // IDC_*
 #include "chrome/browser/ui/browser_list.h"
 #import "chrome/browser/ui/cocoa/browser_window_controller.h"
 #import "chrome/browser/ui/cocoa/location_bar/autocomplete_text_field.h"
 #import "chrome/browser/ui/cocoa/location_bar/autocomplete_text_field_cell.h"
 #import "chrome/browser/ui/cocoa/toolbar/toolbar_controller.h"
-#import "content/browser/find_pasteboard.h"
 #include "grit/generated_resources.h"
+#import "ui/base/clipboard/find_pasteboard.h"
 #include "ui/base/l10n/l10n_util_mac.h"
 
 namespace {
 
 // When too much data is put into a single-line text field, things get
 // janky due to the cost of computing the blink rect.  Sometimes users
 // accidentally paste large amounts, so place a limit on what will be
 // accepted.
 //
 // 10k characters was arbitrarily chosen by seeing how much a text
@@ skipping 463 matching lines @@
   NSAttributedString* selection =
       [self attributedSubstringForProposedRange:selectedRange
                                     actualRange:NULL];
   if (!selection)
     return;
 
   [[FindPasteboard sharedInstance] setFindText:[selection string]];
 }
 
 @end