Adds paste function to searchbox api and handles paste event on fakebox

chrome/browser/ui/omnibox/omnibox_view.h

 // Copyright (c) 2012 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.
 
 // This file defines the interface class OmniboxView.  Each toolkit will
 // implement the edit view differently, so that code is inherently platform
 // specific.  However, the OmniboxEditModel needs to do some communication with
 // the view.  Since the model is shared between platforms, we need to define an
 // interface that all view implementations will share.
 
@@ skipping 213 matching lines @@
   virtual int GetMaxEditWidth(int entry_width) const = 0;
 
   // Adds the autocomplete edit view to view hierarchy and
   // returns the views::View of the edit view.
   virtual views::View* AddToView(views::View* parent) = 0;
 
   // Performs the drop of a drag and drop operation on the view.
   virtual int OnPerformDrop(const ui::DropTargetEvent& event) = 0;
 #endif
 
-  // Returns a string with any leading javascript schemas stripped from the
-  // input text.
+  // Returns |text| with any leading javascript schemas stripped.
   static string16 StripJavascriptSchemas(const string16& text);
 
+  // First, calls StripJavascriptSchemas().  Then automatically collapses
+  // internal whitespace as follows:
+  // * If the only whitespace in |text| is newlines, users are most likely
+  // pasting in URLs split into multiple lines by terminals, email programs,
+  // etc. So all newlines are removed.
+  // * Otherwise, users may be pasting in search data, e.g. street addresses. In
+  // this case, runs of whitespace are collapsed down to single spaces.
+  static string16 SanitizeTextForPaste(const string16& text);
+
   // Returns the current clipboard contents as a string that can be pasted in.
   // In addition to just getting CF_UNICODETEXT out, this can also extract URLs
   // from bookmarks on the clipboard.
   static string16 GetClipboardText();
 
  protected:
   OmniboxView(Profile* profile,
               OmniboxEditController* controller,
               ToolbarModel* toolbar_model,
               CommandUpdater* command_updater);
@@ skipping 18 matching lines @@
   scoped_ptr<OmniboxEditModel> model_;
   OmniboxEditController* controller_;
   ToolbarModel* toolbar_model_;
 
   // The object that handles additional command functionality exposed on the
   // edit, such as invoking the keyword editor.
   CommandUpdater* command_updater_;
 };
 
 #endif  // CHROME_BROWSER_UI_OMNIBOX_OMNIBOX_VIEW_H_