FBTF: Fix more ctor/dtors found by clang plugin.

gpu/command_buffer/service/renderbuffer_manager.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 "gpu/command_buffer/service/renderbuffer_manager.h"
 #include "base/logging.h"
 #include "gpu/command_buffer/common/gles2_cmd_utils.h"
 #include "gpu/command_buffer/service/gles2_cmd_decoder.h"
 
 namespace gpu {
 namespace gles2 {
 
+RenderbufferManager::RenderbufferManager() {}
+
 RenderbufferManager::~RenderbufferManager() {
   DCHECK(renderbuffer_infos_.empty());
 }
 
 void RenderbufferManager::Destroy(bool have_context) {
   while (!renderbuffer_infos_.empty()) {
     if (have_context) {
       RenderbufferInfo* info = renderbuffer_infos_.begin()->second;
       if (!info->IsDeleted()) {
         GLuint service_id = info->service_id();
@@ skipping 39 matching lines @@
       return true;
     }
   }
   return false;
 }
 
 }  // namespace gles2
 }  // namespace gpu