Bug 1291385 - 3. Don't send viewport flush message; r=snorp

We used to use it to sync viewport metrics between Gecko and Java, but I
don't think this is needed anymore.

mobile/android/base/java/org/mozilla/gecko/GeckoApp.java

@@ -1662,7 +1662,6 @@ public abstract class GeckoApp
 
             if (GeckoThread.isRunning()) {
                 geckoConnected();
-                GeckoAppShell.notifyObservers("Viewport:Flush", null);
             }
         }
 

mobile/android/chrome/content/browser.js

@@ -377,7 +377,6 @@ var BrowserApp = {
     Services.obs.addObserver(this, "ScrollTo:FocusedInput", false);
     Services.obs.addObserver(this, "Sanitize:ClearData", false);
     Services.obs.addObserver(this, "FullScreen:Exit", false);
-    Services.obs.addObserver(this, "Viewport:Flush", false);
     Services.obs.addObserver(this, "Passwords:Init", false);
     Services.obs.addObserver(this, "FormHistory:Init", false);
     Services.obs.addObserver(this, "android-get-pref", false);
@@ -1782,10 +1781,6 @@ var BrowserApp = {
         browser.contentDocument.exitFullscreen();
         break;
 
-      case "Viewport:Flush":
-        this.contentDocumentChanged();
-        break;
-
       case "Passwords:Init": {
         let storage = Cc["@mozilla.org/login-manager/storage/mozStorage;1"].
                       getService(Ci.nsILoginManagerStorage);

mobile/android/geckoview/src/main/java/org/mozilla/gecko/GeckoView.java

@@ -386,13 +386,7 @@ public class GeckoView extends LayerView
         throw new IllegalArgumentException("Must import script from 'resources://android/assets/' location.");
     }
 
-    public void connectToGecko() {
-        GeckoAppShell.notifyObservers("Viewport:Flush", null);
-    }
-
     private void handleReady(final JSONObject message) {
-        connectToGecko();
-
         if (mChromeDelegate != null) {
             mChromeDelegate.onReady(this);
         }