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

mojo/edk/mojo_edk.gni

Index: mojo/edk/mojo_edk.gni
diff --git a/third_party/mojo/src/mojo/edk/mojo_edk.gni b/mojo/edk/mojo_edk.gni
similarity index 61%
copy from third_party/mojo/src/mojo/edk/mojo_edk.gni
copy to mojo/edk/mojo_edk.gni
index 21ad315a96af5baa5633da398007f87e850b57f9..efb2a5f46def6a7cb113b7e8f0ff6ade280351ba 100644
--- a/third_party/mojo/src/mojo/edk/mojo_edk.gni
+++ b/mojo/edk/mojo_edk.gni
@@ -2,20 +2,13 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
-import("../public/mojo_sdk.gni")
+import("../../third_party/mojo/src/mojo/public/mojo_sdk.gni")
 
 # A mojo_edk_source_set is a mojo_sdk_source_set that does not restrict
 # external dependencies and understands the following additional variables, all
 # of which admit a list of the relevant elements specified relative to the
 # location of the Mojo EDK:
-# mojo_edk_configs
 # allow_circular_mojo_edk_includes_from
-# mojo_edk_public_deps
-# mojo_edk_deps
-
-# Note that it is assumed that the Mojo EDK is a sibling of the Mojo SDK in a
-# client repo; the distinctions made above are for the sake of clarity in
-# writing targets.
 template("mojo_edk_source_set") {
   mojo_sdk_source_set(target_name) {
     if (defined(invoker.public_deps) || defined(invoker.deps)) {
@@ -25,9 +18,6 @@ template("mojo_edk_source_set") {
     if (defined(invoker.visibility)) {
       visibility = invoker.visibility
     }
-    if (defined(invoker.mojo_edk_visibility)) {
-      mojo_sdk_visibility = invoker.mojo_edk_visibility
-    }
     if (defined(invoker.testonly)) {
       testonly = invoker.testonly
     }
@@ -45,14 +35,6 @@ template("mojo_edk_source_set") {
     if (defined(invoker.configs)) {
       configs = invoker.configs
     }
-    if (defined(invoker.mojo_edk_configs)) {
-      foreach(edk_config, invoker.mojo_edk_configs) {
-        # Check that the EDK config was not mistakenly given as an absolute
-        # path.
-        assert(get_path_info(edk_config, "abspath") != edk_config)
-        configs += [ rebase_path(edk_config, ".", mojo_root) ]
-      }
-    }
 
     allow_circular_includes_from = []
     if (defined(invoker.allow_circular_includes_from)) {
@@ -72,11 +54,6 @@ template("mojo_edk_source_set") {
       public_deps = invoker.public_deps
     }
     mojo_sdk_public_deps = []
-    if (defined(invoker.mojo_edk_public_deps)) {
-      # The EDK is required to be a sibling of the SDK, so the relative
-      # dependencies are rewritten in the same way.
-      mojo_sdk_public_deps = invoker.mojo_edk_public_deps
-    }
     if (defined(invoker.mojo_sdk_public_deps)) {
       mojo_sdk_public_deps += invoker.mojo_sdk_public_deps
     }
@@ -85,19 +62,8 @@ template("mojo_edk_source_set") {
       deps = invoker.deps
     }
     mojo_sdk_deps = []
-    if (defined(invoker.mojo_edk_deps)) {
-      # The EDK is required to be a sibling of the SDK, so the relative
-      # dependencies are rewritten in the same way.
-      mojo_sdk_deps = invoker.mojo_edk_deps
-    }
     if (defined(invoker.mojo_sdk_deps)) {
       mojo_sdk_deps += invoker.mojo_sdk_deps
     }
   }
 }
-
-# Build EDK things with static thread annotation analysis enabled.
-# TODO(vtl): Should we set this at a higher level?
-if (is_clang) {
-  cflags = [ "-Wthread-safety" ]
-}