Use the icon bounds for all calculations.

- Fixes a drag and drop issue when the dynamic
grid scales icons down, due to the drawable bounds
not being equal to their bitmap sizes.

Change-Id: If7c68b51131de7bac3195a2619e22340f7789432

src/com/android/launcher3/Workspace.java

@@ -2536,8 +2536,9 @@ public class Workspace extends SmoothPagedView
             icon.clearPressedOrFocusedBackground();
         }
 
-        mDragController.startDrag(b, dragLayerX, dragLayerY, source, child.getTag(),
+        DragView dv = mDragController.startDrag(b, dragLayerX, dragLayerY, source, child.getTag(),
                 DragController.DRAG_ACTION_MOVE, dragVisualizeOffset, dragRect, scale);
+        dv.setIntrinsicIconScaleFactor(source.getIntrinsicIconScaleFactor());
 
         if (child.getParent() instanceof ShortcutAndWidgetContainer) {
             mDragSourceInternal = (ShortcutAndWidgetContainer) child.getParent();
@@ -4140,6 +4141,11 @@ public class Workspace extends SmoothPagedView
         }
     }
 
+    @Override
+    public float getIntrinsicIconScaleFactor() {
+        return 1f;
+    }
+
     @Override
     public boolean supportsFlingToDelete() {
         return true;