Linux: Blind fix for npwrapper crashes.

webkit/glue/plugins/plugin_host.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/glue/plugins/plugin_host.h"
 
 #include "base/file_util.h"
 #include "base/logging.h"
 #include "base/scoped_ptr.h"
 #include "base/string_piece.h"
@@ skipping 551 matching lines @@
   // default to the Mozilla user agent if we don't have an NPP instance or
   // else Flash won't request windowless mode.
   bool use_mozilla_user_agent = true;
   if (id) {
     scoped_refptr<NPAPI::PluginInstance> plugin = FindInstance(id);
     if (plugin.get() && !plugin->use_mozilla_user_agent())
       use_mozilla_user_agent = false;
   }
 
   if (use_mozilla_user_agent)
-    return "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9a1) Gecko/20061103 Firefox/2.0a1";
+    return "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9a1) "
+        "Gecko/20061103 Firefox/2.0a1";
 #elif defined(OS_MACOSX)
   // Silverlight 4 doesn't handle events correctly unless we claim to be Safari.
   scoped_refptr<NPAPI::PluginInstance> plugin;
   if (id)
     plugin = FindInstance(id);
   if (plugin.get()) {
     WebPluginInfo plugin_info = plugin->plugin_lib()->plugin_info();
     if (plugin_info.name == ASCIIToUTF16("Silverlight Plug-In") &&
         StartsWith(plugin_info.version, ASCIIToUTF16("4."), false)) {
       return "Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_6_4; en-us) "
@@ skipping 115 matching lines @@
         *v = np_object;
         rv = NPERR_NO_ERROR;
       } else {
         NOTREACHED();
       }
       break;
     }
   #if !defined(OS_MACOSX)  // OS X doesn't have windowed plugins.
     case NPNVnetscapeWindow: {
       scoped_refptr<NPAPI::PluginInstance> plugin = FindInstance(id);
+      if (!plugin.get()) {
+        NOTREACHED();
+        return NPERR_GENERIC_ERROR;
+      }
       gfx::PluginWindowHandle handle = plugin->window_handle();
       *((void**)value) = (void*)handle;
       rv = NPERR_NO_ERROR;
       break;
     }
   #endif
     case NPNVjavascriptEnabledBool: {
       // yes, JS is enabled.
       *((void**)value) = (void*)1;
       rv = NPERR_NO_ERROR;
@@ skipping 356 matching lines @@
   scoped_refptr<NPAPI::PluginInstance> plugin = FindInstance(id);
   if (plugin.get()) {
     return plugin->ConvertPoint(sourceX, sourceY, sourceSpace,
                                 destX, destY, destSpace);
   }
   NOTREACHED();
   return false;
 }
 
 }  // extern "C"