Expose Cronet Url requests with priorities.

components/cronet/android/java/src/org/chromium/net/UrlRequestContext.java

Index: components/cronet/android/java/src/org/chromium/net/UrlRequestContext.java
diff --git a/components/cronet/android/java/src/org/chromium/net/UrlRequestContext.java b/components/cronet/android/java/src/org/chromium/net/UrlRequestContext.java
index 80f2df81ea9d5b9e833995eeee3a9fa67969ffef..616c52589024d3a95461145128a4b66ed8110c32 100644
--- a/components/cronet/android/java/src/org/chromium/net/UrlRequestContext.java
+++ b/components/cronet/android/java/src/org/chromium/net/UrlRequestContext.java
@@ -35,6 +35,23 @@ public abstract class UrlRequestContext {
             UrlRequestListener listener, Executor executor);
 
     /**
+     * Creates an UrlRequest object. All UrlRequest functions must

[xunjieli, 2015/06/05 15:02:51]

nit: a UrlRequest. Please also surround it with {@link}.

[mkirsche, 2015/06/05 15:12:21]

Done.

+     * be called on the Executor's thread, and all callbacks will be called

[xunjieli, 2015/06/05 15:02:51]

Since you are here, could you remove "All UrlRequest functions must be called on
the Executor's thread, and"? That part is misleading. Please also edit the
javadoc for the other method.

[mkirsche, 2015/06/05 15:12:21]

Done.

+     * on the Executor's thread as well. Executor must not run tasks on the
+     * current thread to prevent network jank and exception during shutdown.
+     *
+     * createRequest itself may be called on any thread.

[xunjieli, 2015/06/05 15:02:51]

Could you remove "createRequest itself may be called on any thread."? That's
redundant once we remove the part above.

[mkirsche, 2015/06/05 15:12:21]

Done.

+     * @param url URL for the request.
+     * @param listener Callback interface that gets called on different events.
+     * @param executor Executor on which all callbacks will be called.
+     * @param priority Priority of the request - should be one of the

[xunjieli, 2015/06/05 15:02:51]

Why is there a dash here?

[mkirsche, 2015/06/05 15:12:21]

Done.

+                  REQUEST_PRIORITY_* values in UrlRequest.java
+     * @return new request.
+     */
+    public abstract UrlRequest createRequest(String url,
+            UrlRequestListener listener, Executor executor, int priority);
+
+    /**
      * @return true if the context is enabled.
      */
     public abstract boolean isEnabled();