Update pepper to not assume that SharedMemoryHandle is an int.

ppapi/proxy/ppb_audio_proxy.cc

Index: ppapi/proxy/ppb_audio_proxy.cc
diff --git a/ppapi/proxy/ppb_audio_proxy.cc b/ppapi/proxy/ppb_audio_proxy.cc
index ca714355b839c69bbdff7b16443fb98463c247ba..daa0395d1f619121c790a6ecb11b96a2e919a557 100644
--- a/ppapi/proxy/ppb_audio_proxy.cc
+++ b/ppapi/proxy/ppb_audio_proxy.cc
@@ -50,7 +50,8 @@ class Audio : public Resource, public PPB_Audio_Shared {
   int32_t Open(PP_Resource config_id,
                scoped_refptr<TrackedCallback> create_callback) override;
   int32_t GetSyncSocket(int* sync_socket) override;
-  int32_t GetSharedMemory(int* shm_handle, uint32_t* shm_size) override;
+  int32_t GetSharedMemory(base::SharedMemory** shm,
+                          uint32_t* shm_size) override;
 
  private:
   // Owning reference to the current config object. This isn't actually used,
@@ -122,7 +123,7 @@ int32_t Audio::GetSyncSocket(int* sync_socket) {
   return PP_ERROR_NOTSUPPORTED;  // Don't proxy the trusted interface.
 }
 
-int32_t Audio::GetSharedMemory(int* shm_handle, uint32_t* shm_size) {
+int32_t Audio::GetSharedMemory(base::SharedMemory** shm, uint32_t* shm_size) {
   return PP_ERROR_NOTSUPPORTED;  // Don't proxy the trusted interface.
 }
 
@@ -246,7 +247,7 @@ void PPB_Audio_Proxy::AudioChannelConnected(
     const HostResource& resource) {
   IPC::PlatformFileForTransit socket_handle =
       IPC::InvalidPlatformFileForTransit();
-  base::SharedMemoryHandle shared_memory = IPC::InvalidPlatformFileForTransit();
+  base::SharedMemoryHandle shared_memory = base::SharedMemory::NULLHandle();
   uint32_t audio_buffer_length = 0;
 
   int32_t result_code = result;
@@ -290,16 +291,16 @@ int32_t PPB_Audio_Proxy::GetAudioConnectedHandles(
     return PP_ERROR_FAILED;
 
   // Get the shared memory for the buffer.
-  int shared_memory_handle;
-  result = enter.object()->GetSharedMemory(&shared_memory_handle,
-                                           shared_memory_length);
+  base::SharedMemory* shared_memory;
+  result =
+      enter.object()->GetSharedMemory(&shared_memory, shared_memory_length);
   if (result != PP_OK)
     return result;
 
   // shared_memory_handle doesn't belong to us: don't close it.
-  *foreign_shared_memory_handle = dispatcher()->ShareHandleWithRemote(
-      IntToPlatformFile(shared_memory_handle), false);
-  if (*foreign_shared_memory_handle == IPC::InvalidPlatformFileForTransit())
+  *foreign_shared_memory_handle =
+      dispatcher()->ShareSharedMemoryHandleWithRemote(shared_memory->handle());
+  if (!base::SharedMemory::IsHandleValid(*foreign_shared_memory_handle))
     return PP_ERROR_FAILED;
 
   return PP_OK;