Pepper/Flapper: Add IsFormatAvailable() to PPB_Flash_Clipboard.

webkit/tools/test_shell/mock_webclipboard_impl.cc

 // Copyright (c) 2010 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 "webkit/tools/test_shell/mock_webclipboard_impl.h"
 
 #include "base/logging.h"
 #include "base/string_util.h"
 #include "net/base/escape.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebImage.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebURL.h"
 #include "webkit/glue/webclipboard_impl.h"
 #include "webkit/glue/webkit_glue.h"
 
 using WebKit::WebString;
 using WebKit::WebURL;
 using WebKit::WebVector;
 
 bool MockWebClipboardImpl::isFormatAvailable(Format format, Buffer buffer) {
   switch (format) {
+    case FormatPlainText:
+      return !m_plainText.isEmpty();
+
     case FormatHTML:
       return !m_htmlText.isEmpty();
 
     case FormatSmartPaste:
       return m_writeSmartPaste;
 
     default:
       NOTREACHED();
       return false;
   }
@@ skipping 61 matching lines @@
   *containsFilenames = false;
   std::vector<WebString> results;
   if (!m_plainText.isEmpty()) {
     results.push_back(WebString("text/plain")); 
   }
   if (!m_htmlText.isEmpty()) {
     results.push_back(WebString("text/html"));
   }
   return results;
 }