Fix LibInfo unmarshalling exception in Linker

This patch fixes the Chromium Android Linker bug which causes a
RuntimeException when LibInfos are unmarshalled from the shared RELRO
Bundle in renderer process. The problem was caused by an ABI mismatch
between ParcelFileDescriptor.writeToParcel() and
Parcel.readFileDescriptor() (b/19451018).

BUG=348621, 382485

Review URL: https://codereview.chromium.org/941913003

Cr-Commit-Position: refs/heads/master@{#317318}

base/android/java/src/org/chromium/base/library_loader/Linker.java

@@ -1039,7 +1039,7 @@ public class Linker {
             mLoadSize = in.readLong();
             mRelroStart = in.readLong();
             mRelroSize = in.readLong();
-            ParcelFileDescriptor fd = in.readFileDescriptor();
+            ParcelFileDescriptor fd = ParcelFileDescriptor.CREATOR.createFromParcel(in);
             // If CreateSharedRelro fails, the OS file descriptor will be -1 and |fd| will be null.
             mRelroFd = (fd == null) ? -1 : fd.detachFd();
         }