NaCl: Move irt_ppapi.{c,h} to the Chromium repo from the NaCl repo

This will allow irt_ppapi.{c,h} to be dropped from the NaCl side.
Until then, there are two copies, and which copy gets linked in will
depend on library search order.

This creates a new directory, ppapi/nacl_irt/, for irt_ppapi.h since
it defines structs that are part of NaCl's stable ABI.  This new
directory is therefore similar to ppapi/c/, but covers how PPAPI is
hooked up in NaCl.  This also avoids any checkdeps problems with
#including from ppapi/proxy/.

I made the following changes to irt_ppapi.{c,h} when moving them:

 * Changed "*" spacing to follow Chromium style.
 * Added a comment for the assignment to "g_is_main_thread".

BUG= https://code.google.com/p/nativeclient/issues/detail?id=3787 
TEST= tested browser_tests with irt_ppapi.c removed from the NaCl side

Review URL: https://codereview.chromium.org/136333013

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@250319 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 41 insertions, 0 deletions

diff --git a/ppapi/nacl_irt/irt_ppapi.h b/ppapi/nacl_irt/irt_ppapi.h
new file mode 100644
index 0000000..23fbabe
--- /dev/null
+++ b/ppapi/nacl_irt/irt_ppapi.h
@@ -0,0 +1,41 @@
+/*
+ * Copyright 2014 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.
+ */
+
+/*
+ * TODO(mseaborn): Change this to match the filename when NaCl's copy
+ * of irt_ppapi.h is removed.  For now it is needed to avoid a
+ * duplicate definition.
+ */
+#ifndef NATIVE_CLIENT_SRC_UNTRUSTED_IRT_IRT_PPAPI_H_
+#define NATIVE_CLIENT_SRC_UNTRUSTED_IRT_IRT_PPAPI_H_ 1
+
+#include <stddef.h>
+
+#include "ppapi/c/ppp.h"
+
+struct PP_StartFunctions {
+  int32_t (*PPP_InitializeModule)(PP_Module module_id,
+                                  PPB_GetInterface get_browser_interface);
+  void (*PPP_ShutdownModule)();
+  const void* (*PPP_GetInterface)(const char* interface_name);
+};
+
+struct PP_ThreadFunctions {
+  /*
+   * This is a cut-down version of pthread_create()/pthread_join().
+   * We omit thread creation attributes and the thread's return value.
+   *
+   * We use uintptr_t as the thread ID type because pthread_t is not
+   * part of the stable ABI; a user thread library might choose an
+   * arbitrary size for its own pthread_t.
+   */
+  int (*thread_create)(uintptr_t* tid,
+                       void (*func)(void* thread_argument),
+                       void* thread_argument);
+  int (*thread_join)(uintptr_t tid);
+};
+
+#endif