When running ui_tests, need to tell valgrind to also trace child processes.

chrome/test/ui/ui_test.cc

 // Copyright (c) 2006-2008 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/ui/ui_test.h"
 
 #include <set>
 #include <vector>
 
 #include "base/base_switches.h"
@@ skipping 336 matching lines @@
 
   browser_launch_time_ = TimeTicks::Now();
 
 #if defined(OS_WIN)
   bool started = base::LaunchApp(command_line,
                                  false,  // Don't wait for process object
                                          // (doesn't work for us)
                                  !show_window_,
                                  &process_);
 #elif defined(OS_POSIX)
+  // Sometimes one needs to run the browser under a special environment
+  // (e.g. valgrind) without also running the test harness (e.g. python)
+  // under the special environment.  Provide a way to wrap the browser
+  // commandline with a special prefix to invoke the special environment.
+  const char* browser_wrapper = getenv("BROWSER_WRAPPER");
+  if (browser_wrapper) {
+    CommandLine wrapped_command(ASCIIToWide(browser_wrapper));
+    wrapped_command.AppendArguments(command_line, true);
+    command_line = wrapped_command;
+    LOG(INFO) << "BROWSER_WRAPPER was set, prefixing command_line with " << browser_wrapper;

[Dean McNamee, 2009/03/27 11:34:55]

80 cols

+  }
+
   bool started = base::LaunchApp(command_line.argv(),
                                  server_->fds_to_map(),
                                  false,  // Don't wait.
                                  &process_);
 #endif
   ASSERT_TRUE(started);
 
 #if defined(OS_WIN)
   if (use_existing_browser_) {
     DWORD pid = 0;
@@ skipping 471 matching lines @@
 }
 
 bool UITest::EvictFileFromSystemCacheWrapper(const FilePath& path) {
   for (int i = 0; i < 10; i++) {
     if (file_util::EvictFileFromSystemCache(path))
       return true;
     PlatformThread::Sleep(1000);
   }
   return false;
 }