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