cc: Fix uninitialized field in TextureMailbox

cc/resources/texture_mailbox.cc

 // Copyright 2013 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 "cc/resources/texture_mailbox.h"
 
 #include "base/logging.h"
 #include "third_party/khronos/GLES2/gl2.h"
 
 namespace cc {
 
 TextureMailbox::TextureMailbox()
-    : sync_point_(0) {
+    : target_(GL_TEXTURE_2D),
+      sync_point_(0) {
 }
 
 TextureMailbox::TextureMailbox(
     const std::string& mailbox_name,
     const ReleaseCallback& mailbox_callback)
     : callback_(mailbox_callback),
       target_(GL_TEXTURE_2D),
       sync_point_(0) {
   DCHECK(mailbox_name.empty() == mailbox_callback.is_null());
   if (!mailbox_name.empty()) {
@@ skipping 54 matching lines @@
                                         bool lost_resource) const {
   if (!callback_.is_null())
     callback_.Run(sync_point, lost_resource);
 }
 
 void TextureMailbox::SetName(const gpu::Mailbox& other) {
   name_.SetName(other.name);
 }
 
 }  // namespace cc