Fix some bugs with incorrect ! (both missing and extra) in the proxy error ha...

ppapi/proxy/ppb_audio_config_proxy.cc

 // Copyright (c) 2011 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 "ppapi/proxy/ppb_audio_config_proxy.h"
 
 #include "ppapi/c/ppb_audio_config.h"
 #include "ppapi/proxy/plugin_dispatcher.h"
 #include "ppapi/proxy/plugin_resource.h"
 #include "ppapi/proxy/ppapi_messages.h"
@@ skipping 29 matching lines @@
 
 PP_Resource CreateStereo16bit(PP_Instance instance,
                               PP_AudioSampleRate sample_rate,
                               uint32_t sample_frame_count) {
   HostResource resource;
   PluginDispatcher::GetForInstance(instance)->Send(
       new PpapiHostMsg_PPBAudioConfig_Create(
           INTERFACE_ID_PPB_AUDIO_CONFIG, instance,
           static_cast<int32_t>(sample_rate), sample_frame_count,
           &resource));
-  if (!resource.is_null())
+  if (resource.is_null())
     return 0;
 
   linked_ptr<AudioConfig> object(
       new AudioConfig(resource, sample_rate, sample_frame_count));
   return PluginResourceTracker::GetInstance()->AddResource(object);
 }
 
 uint32_t RecommendSampleFrameCount(PP_AudioSampleRate sample_rate,
                                    uint32_t requested_sample_frame_count) {
   // TODO(brettw) Currently we don't actually query to get a value from the
@@ skipping 78 matching lines @@
     int32_t sample_rate,
     uint32_t requested_sample_frame_count,
     uint32_t* result) {
   *result = ppb_audio_config_target()->RecommendSampleFrameCount(
       static_cast<PP_AudioSampleRate>(sample_rate),
       requested_sample_frame_count);
 }
 
 }  // namespace proxy
 }  // namespace pp