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

chrome/common/render_messages.h

 // Copyright (c) 2006-2009 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.
 
 #ifndef CHROME_COMMON_RENDER_MESSAGES_H_
 #define CHROME_COMMON_RENDER_MESSAGES_H_
 
 #include <string>
 #include <vector>
 #include <map>
 
 #include "base/basictypes.h"
+#include "base/clipboard.h"
 #include "base/gfx/native_widget_types.h"
 #include "base/ref_counted.h"
 #include "base/shared_memory.h"
 #include "chrome/browser/renderer_host/resource_handler.h"
 #include "chrome/common/common_param_traits.h"
 #include "chrome/common/css_colors.h"
 #include "chrome/common/extensions/update_manifest.h"
 #include "chrome/common/extensions/url_pattern.h"
 #include "chrome/common/filter_policy.h"
 #include "chrome/common/modal_dialog_event.h"
@@ skipping 2156 matching lines @@
     if (!ReadParam(m, iter, &spec))
       return false;
 
     return p->Parse(spec);
   }
   static void Log(const param_type& p, std::wstring* l) {
     LogParam(p.GetAsString(), l);
   }
 };
 
+template <>
+struct ParamTraits<Clipboard::Buffer> {
+  typedef Clipboard::Buffer param_type;
+  static void Write(Message* m, const param_type& p) {
+    m->WriteInt(p);
+  }
+  static bool Read(const Message* m, void** iter, param_type* p) {
+    int buffer;
+    if (!m->ReadInt(iter, &buffer) || !Clipboard::IsValidBuffer(buffer))
+      return false;
+    *p = Clipboard::FromInt(buffer);
+    return true;
+  }
+  static void Log(const param_type& p, std::wstring* l) {
+    std::wstring type;
+    switch (p) {
+      case Clipboard::BUFFER_STANDARD:
+        type = L"BUFFER_STANDARD";
+        break;
+#if defined(OS_LINUX)
+      case Clipboard::BUFFER_SELECTION:
+        type = L"BUFFER_SELECTION";
+        break;
+#endif
+      default:
+        type = L"UNKNOWN";
+        break;
+    }
+
+    LogParam(type, l);
+  }
+};
+
 }  // namespace IPC
 
 
 #define MESSAGES_INTERNAL_FILE "chrome/common/render_messages_internal.h"
 #include "ipc/ipc_message_macros.h"
 
 #endif  // CHROME_COMMON_RENDER_MESSAGES_H_