Bug 1341275: Rm redundant check for size change in onSizeChanged. r=sebastian

onSizeChanged should only be called when the size actually changes. However,
I did notice weird behavior in the debugger where `formatImage` appeared to be
called twice from onSizeChanged, however, I was unable to reproduce this
behavior with log statements.

MozReview-Commit-ID: A5amGqTxv55

--HG--
extra : rebase_source : 1a53346d35102f1925941d3723c369f6b276ec5a

mobile/android/base/java/org/mozilla/gecko/widget/FaviconView.java

@@ -101,11 +101,6 @@ public class FaviconView extends ImageView {
     protected void onSizeChanged(int w, int h, int oldw, int oldh) {
         super.onSizeChanged(w, h, oldw, oldh);
 
-        // No point rechecking the image if there hasn't really been any change.
-        if (w == oldw && h == oldh) {
-            return;
-        }
-
         mBackgroundRect.right = w;
         mBackgroundRect.bottom = h;