Enable copying long text to Chrome and pasting long text from Chrome

ui/base/clipboard/clipboard_aurax11.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/base/clipboard/clipboard.h"
 
 #include <X11/extensions/Xfixes.h>
 #include <X11/Xatom.h>
 #include <list>
 #include <set>
@@ skipping 495 matching lines @@
   base::TimeTicks start = base::TimeTicks::Now();
   selection_requestor_.PerformBlockingConvertSelectionWithParameter(
       atom_cache_.GetAtom(kClipboardManager),
       atom_cache_.GetAtom(kSaveTargets),
       targets);
   UMA_HISTOGRAM_TIMES("Clipboard.X11StoreCopyPasteDuration",
                       base::TimeTicks::Now() - start);
 }
 
 bool Clipboard::AuraX11Details::CanDispatchEvent(const PlatformEvent& event) {
-  return event->xany.window == x_window_;
+  if (event->xany.window == x_window_)
+    return true;
+
+  if (event->type == PropertyNotify) {
+    return primary_owner_.CanDispatchPropertyEvent(*event) ||
+        clipboard_owner_.CanDispatchPropertyEvent(*event) ||
+        selection_requestor_.CanDispatchPropertyEvent(*event);
+  }
+  return false;
 }
 
 uint32_t Clipboard::AuraX11Details::DispatchEvent(const PlatformEvent& xev) {
   switch (xev->type) {
     case SelectionRequest: {
       if (xev->xselectionrequest.selection == XA_PRIMARY) {
         primary_owner_.OnSelectionRequest(*xev);
       } else {
         // We should not get requests for the CLIPBOARD_MANAGER selection
         // because we never take ownership of it.
@@ skipping 10 matching lines @@
       if (xev->xselectionclear.selection == XA_PRIMARY) {
         primary_owner_.OnSelectionClear(*xev);
       } else {
         // We should not get requests for the CLIPBOARD_MANAGER selection
         // because we never take ownership of it.
         DCHECK_EQ(GetCopyPasteSelection(), xev->xselection.selection);
         clipboard_owner_.OnSelectionClear(*xev);
         }
       break;
     }
+    case PropertyNotify: {
+      if (primary_owner_.CanDispatchPropertyEvent(*xev))
+        primary_owner_.OnPropertyEvent(*xev);
+      if (clipboard_owner_.CanDispatchPropertyEvent(*xev))
+        clipboard_owner_.OnPropertyEvent(*xev);
+      if (selection_requestor_.CanDispatchPropertyEvent(*xev))
+        selection_requestor_.OnPropertyEvent(*xev);
+      break;
+    }
     default:
       break;
   }
 
   return POST_DISPATCH_NONE;
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 // Clipboard
 
@@ skipping 337 matching lines @@
   return type;
 }
 
 // static
 const Clipboard::FormatType& Clipboard::GetPepperCustomDataFormatType() {
   CR_DEFINE_STATIC_LOCAL(FormatType, type, (kMimeTypePepperCustomData));
   return type;
 }
 
 }  // namespace ui