Run ContentMain in a browser_test's browser process. This removes duplication of code in the browse…

chrome/test/base/chrome_test_launcher.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 "chrome/test/base/chrome_test_launcher.h"
 
 #include "base/command_line.h"
 #include "base/debug/leak_annotations.h"
 #include "base/file_util.h"
 #include "base/files/file_path.h"
@@ skipping 67 matching lines @@
 
     // file:// access for ChromeOS.
     new_command_line.AppendSwitch(switches::kAllowFileAccess);
 
     *command_line = new_command_line;
     return true;
   }
 
  protected:
   virtual content::ContentMainDelegate* CreateContentMainDelegate() OVERRIDE {
-#if defined(OS_WIN) || defined (OS_LINUX)
     return new ChromeMainDelegate();
-#else
-    // This delegate is only guaranteed to link on linux and windows, so just
-    // bail out if we are on any other platform.
-    NOTREACHED();
-    return NULL;
-#endif
   }
 
   virtual void AdjustDefaultParallelJobs(int* default_jobs) OVERRIDE {
 #if defined(OS_WIN)
     if (CommandLine::ForCurrentProcess()->HasSwitch(
             switches::kAshBrowserTests)) {
       *default_jobs = 1;
       fprintf(stdout,
               "Disabling test parallelization for --ash-browsertests.\n");
       fflush(stdout);
@@ skipping 22 matching lines @@
   // all other code.
   chrome::ChromeBreakpadClient* breakpad_client =
       new chrome::ChromeBreakpadClient();
   ANNOTATE_LEAKING_OBJECT_PTR(breakpad_client);
   breakpad::SetBreakpadClient(breakpad_client);
 #endif
 
   ChromeTestLauncherDelegate launcher_delegate(runner);
   return content::LaunchTests(&launcher_delegate, default_jobs, argc, argv);
 }