Add WebAPK's tests in ChildProcessLauncherTest.

content/public/android/java/src/org/chromium/content/browser/ChildProcessLauncher.java

Index: content/public/android/java/src/org/chromium/content/browser/ChildProcessLauncher.java
diff --git a/content/public/android/java/src/org/chromium/content/browser/ChildProcessLauncher.java b/content/public/android/java/src/org/chromium/content/browser/ChildProcessLauncher.java
index 0d4cd300eae3dd16f32a6920e3e37b5c5a2ee02b..82211b0ae04e5edf9c3aa580312fe02f55cadc89 100644
--- a/content/public/android/java/src/org/chromium/content/browser/ChildProcessLauncher.java
+++ b/content/public/android/java/src/org/chromium/content/browser/ChildProcessLauncher.java
@@ -979,6 +979,13 @@ public class ChildProcessLauncher {
         return allocateBoundConnection(context, null, true, false, creationParams);
     }
 
+    @VisibleForTesting
+    static ChildProcessConnection allocateConnectionForTesting(Context context,
+            ChildProcessCreationParams creationParams) {
+        return allocateConnection(
+                context, true, getLinkerParamsForNewConnection(), false, creationParams);
+    }
+
     /**
      * Queue up a spawn requests for testing.
      */