POSIX: add command line option to launch renderers in a wrapper

For example, ./Hammer/chrome --renderer-cmd-prefix="gdb --args"

Review URL: http://codereview.chromium.org/21190


git-svn-id: svn://svn.chromium.org/chrome/trunk/src@9438 0039d316-1c4b-4281-b951-d872f2087c98

2 files changed, 14 insertions, 0 deletions

diff --git a/base/command_line.cc b/base/command_line.cc
index cf3e36f..d9a2052 100644
--- a/base/command_line.cc
+++ b/base/command_line.cc
@@ -334,5 +334,15 @@ void CommandLine::AppendArguments(const CommandLine& other,
   for (i = other.switches_.begin(); i != other.switches_.end(); ++i)
     switches_[i->first] = i->second;
 }
+
+void CommandLine::PrependWrapper(const std::wstring& wrapper_wide) {
+  // The wrapper may have embedded arguments (like "gdb --args"). In this case,
+  // we don't pretend to do anything fancy, we just split on spaces.
+  const std::string wrapper = WideToASCII(wrapper_wide);
+  std::vector<std::string> wrapper_and_args;
+  SplitString(wrapper, ' ', &wrapper_and_args);
+  argv_.insert(argv_.begin(), wrapper_and_args.begin(), wrapper_and_args.end());
+}
+
 #endif
 
diff --git a/base/command_line.h b/base/command_line.h
index 9a02546..94992b8 100644
--- a/base/command_line.h
+++ b/base/command_line.h
@@ -114,6 +114,10 @@ class CommandLine {
   void AppendArguments(const CommandLine& other,
                        bool include_program);
 
+  // On POSIX systems it's common to run processes via a wrapper (like
+  // "valgrind" or "gdb --args"). *Note, only availible on POSIX*
+  void PrependWrapper(const std::wstring& wrapper);
+
  private:
   friend class InProcessBrowserTest;