EDK: Convert most uses of PlatformHandleVector to std::vector<ScopedPlatformHandle>.

mojo/edk/system/data_pipe_producer_dispatcher.cc

Index: mojo/edk/system/data_pipe_producer_dispatcher.cc
diff --git a/mojo/edk/system/data_pipe_producer_dispatcher.cc b/mojo/edk/system/data_pipe_producer_dispatcher.cc
index 814fa598c29dca6f67a6a3a88b2ba5245a6c76e8..c08bd884f0fadbdfd3a5a9e11d8d5d7924dd8ba4 100644
--- a/mojo/edk/system/data_pipe_producer_dispatcher.cc
+++ b/mojo/edk/system/data_pipe_producer_dispatcher.cc
@@ -10,6 +10,7 @@
 #include "mojo/edk/system/data_pipe.h"
 #include "mojo/edk/system/memory.h"
 
+using mojo::embedder::ScopedPlatformHandle;
 using mojo::util::MutexLocker;
 using mojo::util::RefPtr;
 
@@ -137,7 +138,7 @@ bool DataPipeProducerDispatcher::EndSerializeAndCloseImplNoLock(
     Channel* channel,
     void* destination,
     size_t* actual_size,
-    embedder::PlatformHandleVector* platform_handles) {
+    std::vector<ScopedPlatformHandle>* platform_handles) {
   AssertHasOneRef();  // Only one ref => no need to take the lock.
 
   bool rv = data_pipe_->ProducerEndSerialize(channel, destination, actual_size,