Merge components/nacl_common.gyp and components/nacl.gyp

All the targets related to nacl are already in nacl.gyp so
it seems natural to merge both files into one.

This is part of an effort to componentize NaCl code.

BUG=244791

Review URL: https://codereview.chromium.org/92043002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@237712 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 237712
Fix error: unused variable 'kNumTasks'.

Needed for iOS builds using -Wunused-const-variable.

BUG=None
TEST=None

Review URL: https://codereview.chromium.org/92093002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@237713 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 237713
Rename RenderViewHostManager to RenderFrameHostManager.

BUG=314791
TEST=No behavior change.
TBR=nduca@chromium.org

Review URL: https://codereview.chromium.org/92153003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@237714 0039d316-1c4b-4281-b951-d872f2087c98
Open HTML files in Chrome by default.

BUG=323561
TEST=When downloading an HTML file, the button on the download shelf should
open the file in a new tab in Chrome; the pop-up menu should have Open and
Open In System Viewer options.

Review URL: https://codereview.chromium.org/92153007

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@237715 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 237715