Remove obsolete methods from IPC::Channel and related classes.

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 71c33faa4f4fe004d65bd61cfe70d01e8dacee5e..c7646bd84507875718f841ec0d6cf21905613761 100644
--- a/content/browser/child_process_launcher.h
+++ b/content/browser/child_process_launcher.h
@@ -130,7 +130,6 @@ class CONTENT_EXPORT ChildProcessLauncher : public base::NonThreadSafe {
                         mojo::edk::ScopedPlatformHandle server_handle,
                         ZygoteHandle zygote,
 #if defined(OS_ANDROID)
-                        base::ScopedFD ipcfd,
                         base::ScopedFD mojo_fd,
 #endif
                         base::Process process,
@@ -139,9 +138,6 @@ class CONTENT_EXPORT ChildProcessLauncher : public base::NonThreadSafe {
   // Notifies the client about the result of the operation.
   void Notify(ZygoteHandle zygote,
               mojo::edk::ScopedPlatformHandle server_handle,
-#if defined(OS_ANDROID)
-              base::ScopedFD ipcfd,
-#endif
               base::Process process,
               int error_code);