tree e4ba92d604d39ea5947eb3d282c86df44adab67c
parent 9d201d6364b259876abf80e26308320db925ced5
author reed@google.com <reed@google.com@2bbb7eff-a529-9590-31e7-b0007b416f81> 1394648915 +0000
committer reed@google.com <reed@google.com@2bbb7eff-a529-9590-31e7-b0007b416f81> 1394648915 +0000

support direct writing to top layer, and hide getTopLayer()

this should remove many of the chrome callers that today call
accessBitmap on the toplayer, so they can read/write those pixels.

The ultimate fix will be to support custom allocation of raster layers
(via GDI/cairo/mac) so we can remove PlatformDevice subclassing in
skia/ext

BUG=skia:
R=bsalomon@google.com, scroggo@google.com

Review URL: https://codereview.chromium.org/197433002

git-svn-id: http://skia.googlecode.com/svn/trunk@13774 2bbb7eff-a529-9590-31e7-b0007b416f81