Changing SpawnChild to return a struct.

mojo/edk/embedder/platform_handle.h

 // Copyright 2013 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.
 
 #ifndef MOJO_EDK_EMBEDDER_PLATFORM_HANDLE_H_
 #define MOJO_EDK_EMBEDDER_PLATFORM_HANDLE_H_
 
 #include "build/build_config.h"
 #include "mojo/edk/system/system_impl_export.h"
 
 #if defined(OS_WIN)
 #include <windows.h>
 
 #include "base/process/process_handle.h"
 #elif defined(OS_MACOSX) && !defined(OS_IOS)
 #include <mach/mach.h>
+#elif defined(OS_ANDROID)
+#include <jni.h>
+#include "base/android/scoped_java_ref.h"
 #endif
 
 namespace mojo {
 namespace edk {
 
 #if defined(OS_POSIX)
 struct MOJO_SYSTEM_IMPL_EXPORT PlatformHandle {
   PlatformHandle() {}
   explicit PlatformHandle(int handle) : handle(handle) {}
 #if defined(OS_MACOSX) && !defined(OS_IOS)
   explicit PlatformHandle(mach_port_t port)
       : type(Type::MACH), port(port) {}
 #endif
+#if defined(OS_ANDROID)
+  explicit PlatformHandle(
+      const base::android::ScopedJavaLocalRef<jobject>& parcelable_param)
+      : type(Type::PARCELABLE), parcelable(parcelable_param) {}
+#endif
 
   void CloseIfNecessary();
 
   bool is_valid() const {
 #if defined(OS_MACOSX) && !defined(OS_IOS)
     if (type == Type::MACH || type == Type::MACH_NAME)
       return port != MACH_PORT_NULL;
 #endif
+#if defined(OS_ANDROID)
+    if (type == Type::PARCELABLE)  // || type == Type::PARCELABLE_ID)
+      return !parcelable.is_null();
+#endif
     return handle != -1;
   }
 
   enum class Type {
     POSIX,
 #if defined(OS_MACOSX) && !defined(OS_IOS)
     MACH,
     // MACH_NAME isn't a real Mach port. But rather the "name" of one that can
     // be resolved to a real port later. This distinction is needed so that the
     // "port" doesn't try to be closed if CloseIfNecessary() is called. Having
     // this also allows us to do checks in other places.
     MACH_NAME,
 #endif
+#if defined(OS_ANDROID)
+    PARCELABLE,
+// PARCELABLE_ID,
+#endif
   };
   Type type = Type::POSIX;
 
   int handle = -1;
 
   // A POSIX handle may be a listen handle that can accept a connection.
   bool needs_connection = false;
 
 #if defined(OS_MACOSX) && !defined(OS_IOS)
   mach_port_t port = MACH_PORT_NULL;
 #endif
+#if defined(OS_ANDROID)
+  base::android::ScopedJavaGlobalRef<jobject> parcelable;
+#endif
 };
 #elif defined(OS_WIN)
 struct MOJO_SYSTEM_IMPL_EXPORT PlatformHandle {
   PlatformHandle() : PlatformHandle(INVALID_HANDLE_VALUE) {}
   explicit PlatformHandle(HANDLE handle)
       : handle(handle), owning_process(base::GetCurrentProcessHandle()) {}
 
   void CloseIfNecessary();
 
   bool is_valid() const { return handle != INVALID_HANDLE_VALUE; }
 
   HANDLE handle;
 
   // A Windows HANDLE may be duplicated to another process but not yet sent to
   // that process. This tracks the handle's owning process.
   base::ProcessHandle owning_process;
 
   // A Windows HANDLE may be an unconnected named pipe. In this case, we need to
   // wait for a connection before communicating on the pipe.
   bool needs_connection = false;
 };
 #else
 #error "Platform not yet supported."
 #endif
 
 }  // namespace edk
 }  // namespace mojo
 
 #endif  // MOJO_EDK_EMBEDDER_PLATFORM_HANDLE_H_