Add a Mojo EDK for Chrome that uses one OS pipe per message pipe.

mojo/edk/system/mapping_table.cc

Index: mojo/edk/system/mapping_table.cc
diff --git a/third_party/mojo/src/mojo/edk/system/mapping_table.cc b/mojo/edk/system/mapping_table.cc
similarity index 67%
copy from third_party/mojo/src/mojo/edk/system/mapping_table.cc
copy to mojo/edk/system/mapping_table.cc
index fab79c36fefcaee0cdfc1c0c3a9bd7a7c147e79f..46afe5a56bb7c2a30ea6cd43eb5ac7a4d73693fb 100644
--- a/third_party/mojo/src/mojo/edk/system/mapping_table.cc
+++ b/mojo/edk/system/mapping_table.cc
@@ -2,14 +2,14 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "third_party/mojo/src/mojo/edk/system/mapping_table.h"
+#include "mojo/edk/system/mapping_table.h"
 
 #include "base/logging.h"
-#include "third_party/mojo/src/mojo/edk/embedder/platform_shared_buffer.h"
-#include "third_party/mojo/src/mojo/edk/system/configuration.h"
+#include "mojo/edk/embedder/platform_shared_buffer.h"
+#include "mojo/edk/system/configuration.h"
 
 namespace mojo {
-namespace system {
+namespace edk {
 
 MappingTable::MappingTable() {
 }
@@ -20,29 +20,29 @@ MappingTable::~MappingTable() {
 }
 
 MojoResult MappingTable::AddMapping(
-    scoped_ptr<embedder::PlatformSharedBufferMapping> mapping) {
+    scoped_ptr<PlatformSharedBufferMapping> mapping) {
   DCHECK(mapping);
 
   if (address_to_mapping_map_.size() >=
       GetConfiguration().max_mapping_table_sze)
     return MOJO_RESULT_RESOURCE_EXHAUSTED;
 
-  uintptr_t address = reinterpret_cast<uintptr_t>(mapping->GetBase());
+  void* address = mapping->GetBase();
   DCHECK(address_to_mapping_map_.find(address) ==
          address_to_mapping_map_.end());
   address_to_mapping_map_[address] = mapping.release();
   return MOJO_RESULT_OK;
 }
 
-MojoResult MappingTable::RemoveMapping(uintptr_t address) {
+MojoResult MappingTable::RemoveMapping(void* address) {
   AddressToMappingMap::iterator it = address_to_mapping_map_.find(address);
   if (it == address_to_mapping_map_.end())
     return MOJO_RESULT_INVALID_ARGUMENT;
-  embedder::PlatformSharedBufferMapping* mapping_to_delete = it->second;
+  PlatformSharedBufferMapping* mapping_to_delete = it->second;
   address_to_mapping_map_.erase(it);
   delete mapping_to_delete;
   return MOJO_RESULT_OK;
 }
 
-}  // namespace system
+}  // namespace edk
 }  // namespace mojo