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

ui/base/clipboard/clipboard_aurax11.cc

Index: ui/base/clipboard/clipboard_aurax11.cc
diff --git a/ui/base/clipboard/clipboard_aurax11.cc b/ui/base/clipboard/clipboard_aurax11.cc
index e1b64e036ca6b953b3c317329a196031e4c51164..e40af36f4523d1fbe1247a7b0ede0f65259be39b 100644
--- a/ui/base/clipboard/clipboard_aurax11.cc
+++ b/ui/base/clipboard/clipboard_aurax11.cc
@@ -513,7 +513,15 @@ void Clipboard::AuraX11Details::StoreCopyPasteDataAndWait() {
 }
 
 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) {
@@ -544,6 +552,15 @@ uint32_t Clipboard::AuraX11Details::DispatchEvent(const PlatformEvent& 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;
   }