Upstream: ChildProcessLauncher connects renderer processes of WebAPKs.

base/android/library_loader/library_loader_hooks.h

Index: base/android/library_loader/library_loader_hooks.h
diff --git a/base/android/library_loader/library_loader_hooks.h b/base/android/library_loader/library_loader_hooks.h
index 3e8969bc59a2c93671bf3e2a4e9d03fefffab096..405a82d23cdfee539afc0a8be2b96d3f23a7983c 100644
--- a/base/android/library_loader/library_loader_hooks.h
+++ b/base/android/library_loader/library_loader_hooks.h
@@ -25,6 +25,10 @@ enum LibraryProcessType {
   PROCESS_WEBVIEW = 3,
   // Shared library is running in child process as part of webview.
   PROCESS_WEBVIEW_CHILD = 4,
+  // Shared library is running in child process as part of WebAPK.
+  // TODO(hanxi): Removes this type if we don't need it in
+  // {@link LibraryLoader} when loading Chrome's shared libraries in WebAPKs.
+  PROCESS_WEBAPK_CHILD = 5,

[michaelbai, 2016/06/08 19:27:12]

Sorry, could you add it back when you really use it, it is here to make someone
wonder how it is used, and it is nice if you add and use it in one CL later.

[Xi Han, 2016/06/08 19:42:44]

Sure, removed.

 };
 
 // Record any pending renderer histogram value as histograms.  Pending values