Fixes for re-enabling more MSVC level 4 warnings: content/renderer/ edition

content/renderer/pepper/pepper_video_capture_host.cc

 // Copyright (c) 2012 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 "content/renderer/pepper/pepper_video_capture_host.h"
 
 #include "content/renderer/pepper/host_globals.h"
 #include "content/renderer/pepper/pepper_media_device_manager.h"
 #include "content/renderer/pepper/pepper_platform_video_capture.h"
 #include "content/renderer/pepper/pepper_plugin_instance_impl.h"
@@ skipping 96 matching lines @@
 void PepperVideoCaptureHost::OnError() {
   PostErrorReply();
 }
 
 void PepperVideoCaptureHost::PostErrorReply() {
   // It either comes because some error was detected while starting (e.g. 2
   // conflicting "master" resolution), or because the browser failed to start
   // the capture.
   SetStatus(PP_VIDEO_CAPTURE_STATUS_STOPPED, true);
   host()->SendUnsolicitedReply(
-      pp_resource(), PpapiPluginMsg_VideoCapture_OnError(PP_ERROR_FAILED));
+      pp_resource(),
+      PpapiPluginMsg_VideoCapture_OnError(
+          static_cast<uint32_t>(PP_ERROR_FAILED)));
 }
 
 void PepperVideoCaptureHost::OnFrameReady(
     const scoped_refptr<media::VideoFrame>& frame,
     media::VideoCaptureFormat format) {
   DCHECK(frame.get());
 
   if (alloc_size_ != frame->coded_size() || buffers_.empty()) {
     AllocBuffers(frame->coded_size(), format.frame_rate);
     alloc_size_ = frame->coded_size();
@@ skipping 284 matching lines @@
 }
 
 PepperVideoCaptureHost::BufferInfo::BufferInfo()
     : in_use(false), data(NULL), buffer() {
 }
 
 PepperVideoCaptureHost::BufferInfo::~BufferInfo() {
 }
 
 }  // namespace content