PPAPI/NaCl: Make nacl_ipc_adapter handle ImageData creation

chrome/nacl/nacl_ipc_adapter.h

Index: chrome/nacl/nacl_ipc_adapter.h
diff --git a/chrome/nacl/nacl_ipc_adapter.h b/chrome/nacl/nacl_ipc_adapter.h
index c8b29ae34670c947dc5602167f46e70d843270d0..19cd3e7f778e7205f5ca70f6398194a35f64bc51 100644
--- a/chrome/nacl/nacl_ipc_adapter.h
+++ b/chrome/nacl/nacl_ipc_adapter.h
@@ -5,6 +5,7 @@
 #ifndef CHROME_NACL_NACL_IPC_ADAPTER_H_
 #define CHROME_NACL_NACL_IPC_ADAPTER_H_
 
+#include <map>
 #include <queue>
 #include <string>
 
@@ -18,6 +19,7 @@
 #include "base/task_runner.h"
 #include "ipc/ipc_channel.h"
 #include "ipc/ipc_message.h"
+#include "ipc/ipc_sync_message.h"
 
 struct NaClDesc;
 struct NaClImcTypedMsgHdr;
@@ -117,6 +119,11 @@ class NaClIPCAdapter : public base::RefCountedThreadSafe<NaClIPCAdapter>,
     // to be received by the plugin.
     std::queue< scoped_refptr<RewrittenMessage> > to_be_received_;
 
+    // This is a cheap and dirty hack to save off the size (and make sure we
+    // read the right replies).
+    typedef std::map<int, uint32_t> PendingImageDataMsgMap;
+    PendingImageDataMsgMap pending_image_data_msgs_;
+
     // Data that we've queued from the plugin to send, but doesn't consist of a
     // full message yet. The calling code can break apart the message into
     // smaller pieces, and we need to send the message to the other process in