Bug 1195496 - Move speculative connection from CLH to GeckoApp; r=snorp

Moving speculative connection from CLH to GeckoApp allows us to start
the speculative connection very early in the startup process rather
than later in startup.

mobile/android/base/GeckoApp.java

@@ -1229,6 +1229,11 @@ public abstract class GeckoApp
             GeckoThread.ensureInit(args, action,
                     TextUtils.isEmpty(uri) ? null : uri,
                     /* debugging */ ACTION_DEBUG.equals(action));
+
+            if (!TextUtils.isEmpty(uri)) {
+                // Start a speculative connection as soon as Gecko loads.
+                GeckoThread.speculativeConnect(uri);
+            }
         }
 
         // GeckoThread has to register for "Gecko:Ready" first, so GeckoApp registers

mobile/android/components/BrowserCLH.js

@@ -78,9 +78,6 @@ BrowserCLH.prototype = {
       if (!uri)
         return;
 
-      // Let's get a head start on opening the network connection to the URI we are about to load
-      Services.io.QueryInterface(Ci.nsISpeculativeConnect).speculativeConnect(uri, null);
-
       let browserWin = Services.wm.getMostRecentWindow("navigator:browser");
       if (browserWin) {
         let whereFlags = pinned ? Ci.nsIBrowserDOMWindow.OPEN_SWITCHTAB : Ci.nsIBrowserDOMWindow.OPEN_NEWTAB;