Add access to Physical Web Service results

chrome/android/java/src/org/chromium/chrome/browser/physicalweb/UrlManager.java

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 package org.chromium.chrome.browser.physicalweb;
 
 import android.app.AlarmManager;
 import android.app.Notification;
 import android.app.NotificationManager;
 import android.app.PendingIntent;
@@ skipping 234 matching lines @@
 
     public Set<String> getNearbyUrls() {
         return mNearbyUrls;
     }
 
     public Set<String> getResolvedUrls() {
         return mPwsResultMap.keySet();
     }
 
     /**
+     * Gets all resolved URLs as pairs of their UrlInfo and PwsResult.
+     */
+    public PwPair[] getPwPairs() {
+        ArrayList<PwPair> pairs = new ArrayList<>();
+        for (PwsResult pwsResult : mPwsResultMap.values()) {
+            pairs.add(new PwPair(mUrlInfoMap.get(pwsResult.requestUrl), pwsResult));

[cco3, 2016/09/16 18:11:49]

When we have an ID other than URLs, this will not get every pair.  You should
loop through the UrlInfos first.  Also, are we sure we want this function
directly here in java (instead of synthesizing the data into pairs in c++?)

[hayesjordan, 2016/09/16 18:30:10]

Would that mean the returned list could have multiple pairs with the same
PwsResult?

If we have ID other than URLs for mUrlInfoMap wouldn't that break line 322?

So just return have a function that returns an array of PwsResults and a
function that returns an array of UrlInfos? 

[cco3, 2016/09/16 18:33:56]

Yes
We'd need to do a reverse lookup of UrlInfos at that point, at least later on in
the call stack, when distance and beacon info becomes important.
I don't know...let's talk about how this will be used.

+        }
+        return pairs.toArray(new PwPair[0]);
+    }
+
+    /**
      * Forget all stored URLs and clear the notification.
      */
     public void clearAllUrls() {
         clearNearbyUrls();
         mUrlsSortedByTimestamp.clear();
         mUrlInfoMap.clear();
         mPwsResultMap.clear();
         putCachedUrlInfoMap();
         putCachedPwsResultMap();
     }
@@ skipping 388 matching lines @@
                 || mPwsResultMap.containsKey(url)
                 || mUrlInfoMap.containsKey(url)
                 || mUrlsSortedByTimestamp.contains(url);
     }
 
     @VisibleForTesting
     int getMaxCacheSize() {
         return MAX_CACHE_SIZE;
     }
 }