Landscape grid changes for Workspace/All Apps.

This is the just first CL to get eyes on the changes.
Next CL will update the All Apps to be full width.

Bug: 37015359
Change-Id: I2d7ec6851fdc13b8fa654e7e2be3152330243ccc
diff --git a/src/com/android/launcher3/BaseContainerView.java b/src/com/android/launcher3/BaseContainerView.java
index ac7cbaf..c55a586 100644
--- a/src/com/android/launcher3/BaseContainerView.java
+++ b/src/com/android/launcher3/BaseContainerView.java
@@ -113,20 +113,18 @@
      * Calculate the background padding as it can change due to insets/content padding change.
      */
     private void updatePaddings() {
-        Context context = getContext();
-        int paddingLeft;
-        int paddingRight;
-        int paddingTop;
-        int paddingBottom;
-
-        DeviceProfile grid = Launcher.getLauncher(context).getDeviceProfile();
+        DeviceProfile grid = Launcher.getLauncher(getContext()).getDeviceProfile();
         int[] padding = grid.getContainerPadding();
-        paddingLeft = padding[0] + grid.edgeMarginPx;
-        paddingRight = padding[1] + grid.edgeMarginPx;
+
+        int paddingLeft = padding[0];
+        int paddingRight = padding[1];
+        int paddingTop = 0;
+        int paddingBottom = 0;
+
         if (!grid.isVerticalBarLayout()) {
+            paddingLeft += grid.edgeMarginPx;
+            paddingRight += grid.edgeMarginPx;
             paddingTop = paddingBottom = grid.edgeMarginPx;
-        } else {
-            paddingTop = paddingBottom = 0;
         }
         updateBackground(paddingLeft, paddingTop, paddingRight, paddingBottom);
     }