Views Textfield: Copy on Ctrl+Insert, fix and disable overtype.

ui/views/controls/textfield/native_textfield_views.cc

 // 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.
 
 #include "ui/views/controls/textfield/native_textfield_views.h"
 
 #include <algorithm>
 #include <set>
 
 #include "base/bind.h"
@@ skipping 1067 matching lines @@
           model_->Backspace();
         else
           model_->Delete();
 
         // We have to consume the backspace/delete keys here even if the edit
         // did not make effects.  This is to prevent further handling of the key
         // event that might have unintended side-effects.
         text_changed = true;
         break;
       case ui::VKEY_INSERT:
-        GetRenderText()->ToggleInsertMode();
-        cursor_changed = true;
+        if (control && !shift)
+          Copy();
+        else if (shift && !control)
+          cursor_changed = text_changed = Paste();
         break;
       default:
         break;
     }
 
     // We must have input method in order to support text input.
     DCHECK(textfield_->GetInputMethod());
 
     UpdateAfterChange(text_changed, cursor_changed);
     OnAfterUserAction();
@@ skipping 193 matching lines @@
   // Filter out all control characters, including tab and new line characters,
   // and all characters with Alt modifier. But we need to allow characters with
   // AltGr modifier.
   // On Windows AltGr is represented by Alt+Ctrl, and on Linux it's a different
   // flag that we don't care about.
   return ((ch >= 0x20 && ch < 0x7F) || ch > 0x9F) &&
       (flags & ~(ui::EF_SHIFT_DOWN | ui::EF_CAPS_LOCK_DOWN)) != ui::EF_ALT_DOWN;
 }
 
 }  // namespace views