Initial implementation for sharing field trial state (win)

content/browser/child_process_launcher.h

Index: content/browser/child_process_launcher.h
diff --git a/content/browser/child_process_launcher.h b/content/browser/child_process_launcher.h
index b0cf02ca54eb731f166218575b235e77dac92fd8..ce25c4d0d95ccb09492412fbd53bcd3a68c404e3 100644
--- a/content/browser/child_process_launcher.h
+++ b/content/browser/child_process_launcher.h
@@ -76,6 +76,9 @@ class CONTENT_EXPORT ChildProcessLauncher : public base::NonThreadSafe {
   // callback must be safe to call from any thread.
   ChildProcessLauncher(
       SandboxedProcessLauncherDelegate* delegate,
+  #if defined(OS_WIN)
+      HANDLE field_trial_handle,
+  #endif
       base::CommandLine* cmd_line,
       int child_process_id,
       Client* client,
@@ -115,6 +118,9 @@ class CONTENT_EXPORT ChildProcessLauncher : public base::NonThreadSafe {
  private:
   // Posts a task to the launcher thread to do the actual work.
   void Launch(SandboxedProcessLauncherDelegate* delegate,
+#if defined(OS_WIN)
+              HANDLE field_trial_handle,
+#endif
               base::CommandLine* cmd_line,
               int child_process_id);