Don't limit zoom scale change by the minimum increment.

issue: 4080125
Change-Id: I3fa258e12e7aa44c7286c9dccb1f249d5ae78a12

core/java/android/webkit/ZoomManager.java

@@ -535,7 +535,7 @@ class ZoomManager {
             mTextWrapScale = scale;
         }
 
-        if (exceedsMinScaleIncrement(scale, mActualScale) || force) {
+        if (scale != mActualScale || force) {
             float oldScale = mActualScale;
             float oldInvScale = mInvActualScale;