Fix descriptions of WebContents size methods

The descriptions of the getHeight and getWidth methods of
the WebContents class state that the return values are in physical pixels,
whereas they are actually in dip.

Change-Id: I1b18cf0182f025b6b880e70d13c3265d0f825791
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1768710Reviewed-by: David Trainor <dtrainor@chromium.org>
Reviewed-by: Friedrich [CET] <fhorschig@chromium.org>
Commit-Queue: Andrei Chulkov <achulkov@google.com>
Cr-Commit-Position: refs/heads/master@{#691556}

content/public/android/java/src/org/chromium/content_public/browser/WebContents.java

@@ -462,16 +462,16 @@ public interface WebContents extends Parcelable {
     void setSize(int width, int height);
 
     /**
-     * Gets the view size width of the WebContents. The size is in physical pixels.
+     * Gets the view size width of the WebContents.
      *
-     * @return The width of the view.
+     * @return The width of the view in dip.
      */
     int getWidth();
 
     /**
-     * Gets the view size width of the WebContents. The size is in physical pixels.
+     * Gets the view size width of the WebContents.
      *
-     * @return The width of the view.
+     * @return The width of the view in dip.
      */
     int getHeight();