Ratchet down chrome-bss size expectation.

The size metric here dropped significantly in
chromium revision range r241262 - r241265,
or blink revision range 163980 - 164001.
( In spite of my curiosity, I didn't investigate why, because lower is better. )

BUG=329309
R=sullivan@chromium.org

Review URL: https://codereview.chromium.org/107853007

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@241398 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 241398
Android: allow to set the initial visibility of WebContents being created.

This patch exposes the |initially_hidden| creation parameter of WebContents in
Java ContentViewUtil, allowing the Android embedder to correctly set the
visibility of WebContents created for tabs opened to load in background.

Also, the |are_layers_attached| flag of RenderWidgetHostViewAndroid is now set
in constructor to match visibility tracked in RenderWidgetHost.

This allows to fix the Page Visibility API for tabs opened to load in
background.

BUG=327125

Review URL: https://codereview.chromium.org/110873006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@241399 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 241399