Fix docs for getOffsetWidth/Height.

Repost of Rietveld issue 1586803.
Patch by: stephenh

Review at http://gwt-code-reviews.appspot.com/1611803

Review by: rchandia@google.com

git-svn-id: https://google-web-toolkit.googlecode.com/svn/trunk@10796 8db76d5a-ed1c-0410-87a9-c151d255dfc7
diff --git a/user/src/com/google/gwt/user/client/ui/UIObject.java b/user/src/com/google/gwt/user/client/ui/UIObject.java
index 10985d3..a9bc6ab 100644
--- a/user/src/com/google/gwt/user/client/ui/UIObject.java
+++ b/user/src/com/google/gwt/user/client/ui/UIObject.java
@@ -530,7 +530,7 @@
 
   /**
    * Gets the object's offset height in pixels. This is the total height of the
-   * object, including decorations such as border, margin, and padding.
+   * object, including decorations such as border and padding, but not margin.
    * 
    * @return the object's offset height
    */
@@ -540,7 +540,7 @@
 
   /**
    * Gets the object's offset width in pixels. This is the total width of the
-   * object, including decorations such as border, margin, and padding.
+   * object, including decorations such as border and padding, but not margin.
    * 
    * @return the object's offset width
    */