Change the ChromiumPasteboard to have a notion of an alternate clipboard...

chrome/browser/autocomplete/autocomplete_edit_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_edit_view_mac.h"
 
 #include <Carbon/Carbon.h>  // kVK_Return
 #include "app/gfx/font.h"
 #include "app/resource_bundle.h"
 #include "base/clipboard.h"
@@ skipping 643 matching lines @@
   DCHECK_EQ([field_ currentEditor], [[field_ window] firstResponder]);
 }
 
 // TODO(shess): Copied from autocomplete_edit_view_win.cc.  Could this
 // be pushed into the model?
 std::wstring AutocompleteEditViewMac::GetClipboardText(Clipboard* clipboard) {
   // autocomplete_edit_view_win.cc assumes this can never happen, we
   // will too.
   DCHECK(clipboard);
 
-  if (clipboard->IsFormatAvailable(Clipboard::GetPlainTextWFormatType())) {
+  if (clipboard->IsFormatAvailable(Clipboard::GetPlainTextWFormatType(),
+                                   Clipboard::BUFFER_STANDARD)) {
     string16 text16;
-    clipboard->ReadText(&text16);
+    clipboard->ReadText(Clipboard::BUFFER_STANDARD, &text16);
 
     // Note: Unlike in the find popup and textfield view, here we completely
     // remove whitespace strings containing newlines.  We assume users are
     // most likely pasting in URLs that may have been split into multiple
     // lines in terminals, email programs, etc., and so linebreaks indicate
     // completely bogus whitespace that would just cause the input to be
     // invalid.
     return CollapseWhitespace(UTF16ToWide(text16), true);
   }
 
   // Try bookmark format.
   //
   // It is tempting to try bookmark format first, but the URL we get out of a
   // bookmark has been cannonicalized via GURL.  This means if a user copies
   // and pastes from the URL bar to itself, the text will get fixed up and
   // cannonicalized, which is not what the user expects.  By pasting in this
   // order, we are sure to paste what the user copied.
-  if (clipboard->IsFormatAvailable(Clipboard::GetUrlWFormatType())) {
+  if (clipboard->IsFormatAvailable(Clipboard::GetUrlWFormatType(),
+                                   Clipboard::BUFFER_STANDARD)) {
     std::string url_str;
     clipboard->ReadBookmark(NULL, &url_str);
     // pass resulting url string through GURL to normalize
     GURL url(url_str);
     if (url.is_valid()) {
       return UTF8ToWide(url.spec());
     }
   }
 
   return std::wstring();
@@ skipping 150 matching lines @@
 // prepended and ".com" appended.  This calls down to
 // AutocompleteEditModel::OnControlKeyChanged() so that it can change
 // the popup to reflect this.  See autocomplete_edit.cc
 // OnControlKeyChanged() and OnAfterPossibleChange().
 - (void)control:(NSControl*)control flagsChanged:(NSEvent*)theEvent {
   bool controlFlag = ([theEvent modifierFlags]&NSControlKeyMask) != 0;
   edit_view_->OnControlKeyChanged(controlFlag);
 }
 
 @end