Make messages in javascript's alert copyable....

chrome/views/controls/message_box_view.cc

Index: chrome/views/controls/message_box_view.cc
===================================================================
--- chrome/views/controls/message_box_view.cc	(revision 14268)
+++ chrome/views/controls/message_box_view.cc	(working copy)
@@ -5,8 +5,11 @@
 #include "chrome/views/controls/message_box_view.h"
 
 #include "base/message_loop.h"
+#include "base/scoped_clipboard_writer.h"
 #include "base/string_util.h"
+#include "chrome/browser/browser_process.h"
 #include "chrome/browser/views/standard_layout.h"
+#include "chrome/common/clipboard_service.h"
 #include "chrome/common/l10n_util.h"
 #include "chrome/common/message_box_flags.h"
 #include "chrome/views/controls/button/checkbox.h"
@@ -87,6 +90,20 @@
   }
 }
 
+bool MessageBoxView::AcceleratorPressed(
+    const views::Accelerator& accelerator) {
+  // We only accepts Ctrl-C.
+  DCHECK(accelerator.GetKeyCode() == 'C' && accelerator.IsCtrlDown());
+
+  ClipboardService* clipboard = g_browser_process->clipboard_service();
+  if (!clipboard)
+    return false;
+
+  ScopedClipboardWriter scw(clipboard);
+  scw.WriteText(message_label_->GetText());
+  return true;
+}
+
 ///////////////////////////////////////////////////////////////////////////////
 // MessageBoxView, private: