Fix a couple regressions from resetting AppsCustomizeTabHost

Bug 18409435
Bug 18358080

Change-Id: I07a071342b5c5e062ab2bb562b672d93ba0d5c2e
diff --git a/src/com/android/launcher3/AppsCustomizeTabHost.java b/src/com/android/launcher3/AppsCustomizeTabHost.java
index 69e3ac1..a271712 100644
--- a/src/com/android/launcher3/AppsCustomizeTabHost.java
+++ b/src/com/android/launcher3/AppsCustomizeTabHost.java
@@ -118,6 +118,10 @@
         mPagedView.reset();
     }
 
+    void trimMemory() {
+        mPagedView.trimMemory();
+    }
+
     public void onWindowVisible() {
         if (getVisibility() == VISIBLE) {
             mContent.setVisibility(VISIBLE);