Bug 1084423: Fix guards to limit wifi and cellular data per location. r=vng

Without these size guards in place, can result in excessively large collections for a single location.

mobile/android/stumbler/java/org/mozilla/mozstumbler/service/stumblerthread/Reporter.java

@@ -142,6 +142,10 @@ public final class Reporter extends BroadcastReceiver {
 
         Map<String, ScanResult> currentWifiData = mBundle.getWifiData();
         for (ScanResult result : results) {
+            if (currentWifiData.size() > MAX_WIFIS_PER_LOCATION) {
+                return;
+            }
+
             String key = result.BSSID;
             if (!currentWifiData.containsKey(key)) {
                 currentWifiData.put(key, result);
@@ -156,6 +160,9 @@ public final class Reporter extends BroadcastReceiver {
 
         Map<String, CellInfo> currentCellData = mBundle.getCellData();
         for (CellInfo result : cells) {
+            if (currentCellData.size() > MAX_CELLS_PER_LOCATION) {
+                return;
+            }
             String key = result.getCellIdentity();
             if (!currentCellData.containsKey(key)) {
                 currentCellData.put(key, result);
@@ -191,7 +198,9 @@ public final class Reporter extends BroadcastReceiver {
             Log.d(LOG_TAG, "Received bundle: " + mlsObj.toString());
         }
 
-        AppGlobals.guiLogInfo(mlsObj.toString());
+        if (wifiCount + cellCount < 1) {
+            return;
+        }
 
         try {
             DataStorageManager.getInstance().insert(mlsObj.toString(), wifiCount, cellCount);