adjust tab width for screen size

       Bug: 4427112
       make tabs smaller for portrait 7 inch screen

Change-Id: I0e02e68b1bae1fe7e81f1a3a49911707de40903b
diff --git a/src/com/android/browser/TabScrollView.java b/src/com/android/browser/TabScrollView.java
index d0648b7..f43d6d6 100644
--- a/src/com/android/browser/TabScrollView.java
+++ b/src/com/android/browser/TabScrollView.java
@@ -16,6 +16,8 @@
 
 package com.android.browser;
 
+import com.android.browser.TabBar.TabView;
+
 import android.animation.ObjectAnimator;
 import android.content.Context;
 import android.util.AttributeSet;
@@ -85,6 +87,16 @@
         ensureChildVisible(getSelectedTab());
     }
 
+    // in case of a configuration change, adjust tab width
+    protected void updateLayout() {
+        final int count = mContentView.getChildCount();
+        for (int i = 0; i < count; i++) {
+            final TabView tv = (TabView) mContentView.getChildAt(i);
+            tv.updateLayoutParams();
+        }
+        ensureChildVisible(getSelectedTab());
+    }
+
     void setSelectedTab(int position) {
         View v = getSelectedTab();
         if (v != null) {