Coverity: Initialize member variables.

content/browser/zygote_main_linux.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 "content/browser/zygote_host_linux.h"
 
 #include <dlfcn.h>
 #include <fcntl.h>
 #include <pthread.h>
 #include <sys/socket.h>
@@ skipping 76 matching lines @@
   }
 }
 #endif  // CHROMIUM_SELINUX
 
 // This is the object which implements the zygote. The ZygoteMain function,
 // which is called from ChromeMain, simply constructs one of these objects and
 // runs it.
 class Zygote {
  public:
   Zygote(int sandbox_flags, content::ZygoteForkDelegate* helper)
-      : sandbox_flags_(sandbox_flags), helper_(helper) {
+      : sandbox_flags_(sandbox_flags),
+        helper_(helper),
+        initial_uma_sample_(0),
+        initial_uma_boundary_value_(0) {
     if (helper_)
       helper_->InitialUMA(&initial_uma_name_,
                           &initial_uma_sample_,
                           &initial_uma_boundary_value_);
   }
 
   bool ProcessRequests() {
     // A SOCK_SEQPACKET socket is installed in fd 3. We get commands from the
     // browser on it.
     // A SOCK_DGRAM is installed in fd 5. This is the sandbox IPC channel.
@@ skipping 758 matching lines @@
       VLOG(1) << "Enabling experimental Seccomp sandbox.";
       sandbox_flags |= ZygoteHost::kSandboxSeccomp;
     }
   }
 #endif  // SECCOMP_SANDBOX
 
   Zygote zygote(sandbox_flags, forkdelegate);
   // This function call can return multiple times, once per fork().
   return zygote.ProcessRequests();
 }