No need to kClear_Mode a layer right after its created, as that will automatically
be done by Skia (assuming kHasAlphaLayer_SaveFlag was set, which it is by default).

Also, catch one more place where

    saveLayer(alpha)
    drawimage
    restore

can be replaced with

    drawimage(alpha)
Review URL: https://codereview.chromium.org/11058003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@160227 0039d316-1c4b-4281-b951-d872f2087c98
6 files changed