drive: Remove cache entry before metadata entry

Cache entry cannot be removed when mounted.
This check should be performed before removing metadata entry.

BUG=349380

Review URL: https://codereview.chromium.org/187893006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@255656 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 255656
Move RenderViewHost::InsertCSS to RenderFrameHost.

BUG=304341
TEST=no change

Review URL: https://codereview.chromium.org/188923002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@255657 0039d316-1c4b-4281-b951-d872f2087c98
Move webcrypto to child/ and add support to WebKitPlatformSupportImpl.

The current content/renderer/webcrypto implementation is really generalizable to both
renderers and workers. This commit moves content/renderer/webcrypto to
content/child/webcrypto. Additionally, it adds support in WebKitPlatformSupportImpl for WebCrypto, so both workers and renderers can use it.

BUG=349514

Review URL: https://codereview.chromium.org/188203003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@255658 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 255657
SVN changes up to revision 255658