Update from https://crrev.com/311145

mojo/edk/test/multiprocess_test_helper.h

Index: mojo/edk/test/multiprocess_test_helper.h
diff --git a/mojo/edk/test/multiprocess_test_helper.h b/mojo/edk/test/multiprocess_test_helper.h
index d131460228aaf69494c9fa3ed23b67cd24a11392..e40b309c52aab3fa4f6d53f450426dce889f2bc2 100644
--- a/mojo/edk/test/multiprocess_test_helper.h
+++ b/mojo/edk/test/multiprocess_test_helper.h
@@ -8,7 +8,7 @@
 #include <string>
 
 #include "base/macros.h"
-#include "base/process/process_handle.h"
+#include "base/process/process.h"
 #include "base/test/multiprocess_test.h"
 #include "base/test/test_timeouts.h"
 #include "mojo/edk/embedder/scoped_platform_handle.h"
@@ -58,7 +58,7 @@ class MultiprocessTestHelper {
   scoped_ptr<embedder::PlatformChannelPair> platform_channel_pair_;
 
   // Valid after |StartChild()| and before |WaitForChildShutdown()|.
-  base::ProcessHandle test_child_handle_;
+  base::Process test_child_;
 
   DISALLOW_COPY_AND_ASSIGN(MultiprocessTestHelper);
 };