Hold video frame in Bitmap instead of keeping a ByteBuffer reference.

Sometimes, the DesktopView was repainted whilst |JniInterface.sBuffer|
no longer referred to valid frame data. This CL cleans things up by
replacing the ByteBuffer with a Bitmap, and having JniFrameConsumer
copy the completely-decoded data directly into the Java Bitmap.

Review URL: https://codereview.chromium.org/24072012

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@228898 0039d316-1c4b-4281-b951-d872f2087c98
Remove the Chrome Now JS Welcome Toast

With changes in requirements as well as the new Native Welcome Notification,
the Chrome Now JS Welcome Toast is no longer needed.

BUG=305449

Review URL: https://codereview.chromium.org/26662008

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@228899 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 228899