Update from https://crrev.com/328418

base/android/java/src/org/chromium/base/PathUtils.java

Index: base/android/java/src/org/chromium/base/PathUtils.java
diff --git a/base/android/java/src/org/chromium/base/PathUtils.java b/base/android/java/src/org/chromium/base/PathUtils.java
index 5da080e834d6e684b53e272c7b4cc38eaf2cfbe3..0b3ed20dfdda11ad9675dcf564db96ba7199e8a0 100644
--- a/base/android/java/src/org/chromium/base/PathUtils.java
+++ b/base/android/java/src/org/chromium/base/PathUtils.java
@@ -41,7 +41,10 @@ public abstract class PathUtils {
                 paths[DATA_DIRECTORY] =
                         appContext.getDir(dataDirectorySuffix[0], Context.MODE_PRIVATE).getPath();
                 paths[DATABASE_DIRECTORY] = appContext.getDatabasePath("foo").getParent();
-                paths[CACHE_DIRECTORY] = appContext.getCacheDir().getPath();
+                // TODO(wnwen): Find a way to avoid calling this function in renderer process.
+                if (appContext.getCacheDir() != null) {
+                    paths[CACHE_DIRECTORY] = appContext.getCacheDir().getPath();
+                }
                 return paths;
             }
         }.executeOnExecutor(AsyncTask.SERIAL_EXECUTOR, suffix);