Fix single-process ui test failures from my previous change. The problem was...

chrome/common/child_process_info.h

 // Copyright (c) 2009 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.
 
 #ifndef CHROME_COMMON_CHILD_PROCESS_INFO_H_
 #define CHROME_COMMON_CHILD_PROCESS_INFO_H_
 
 #include <string>
 
 #include "base/process.h"
@@ skipping 12 matching lines @@
   // Returns the type of the process.
   ProcessType type() const { return type_; }
 
   // Returns the name of the process.  i.e. for plugins it might be Flash, while
   // for workers it might be the domain that it's from.
   std::wstring name() const { return name_; }
 
   // Getter to the process handle.
   base::ProcessHandle handle() const { return process_.handle(); }
 
-  int pid() const {
+  virtual int GetProcessId() const {
     if (pid_ != -1)
       return pid_;
 
     pid_ = process_.pid();
     return pid_;
   }
   void SetProcessBackgrounded() const { process_.SetProcessBackgrounded(true); }
   void ReduceWorkingSet() const { process_.ReduceWorkingSet(); }
 
   // Returns an English name of the process type, should only be used for non
@@ skipping 44 matching lines @@
   void set_name(const std::wstring& name) { name_ = name; }
   void set_handle(base::ProcessHandle handle) {
     process_.set_handle(handle);
     pid_ = -1;
   }
 
   // Derived objects need to use this constructor so we know what type we are.
   ChildProcessInfo(ProcessType type);
 
  private:
-  friend class ResourceDispatcherHostTest;
-
   ProcessType type_;
   std::wstring name_;
   mutable int pid_;  // Cache of the process id.
 
   // The handle to the process.
   mutable base::Process process_;
 };
 
 #endif  // CHROME_COMMON_CHILD_PROCESS_INFO_H_