Extend all apps pull up activation area to page indicator view
b/29752599

Change-Id: I3ee5efefa98defbc8f386895753946efe79708b4
Background: page indicator's background is where the caret symbol is.
diff --git a/src/com/android/launcher3/PagedView.java b/src/com/android/launcher3/PagedView.java
index 5ac3f0b..2d3e8dd 100644
--- a/src/com/android/launcher3/PagedView.java
+++ b/src/com/android/launcher3/PagedView.java
@@ -321,7 +321,7 @@
         return (getMeasuredHeight() - getViewportHeight()) / 2;
     }
 
-    PageIndicator getPageIndicator() {
+    public PageIndicator getPageIndicator() {
         return mPageIndicator;
     }