Prepare CrashHandlerHostLinux for move to breakpad component

To move the linux breakpad files to the component, we first need to
remove all dependencies on chrome/ from the browser side parts.

BUG=247431
R=thakis@chromium.org

Review URL: https://codereview.chromium.org/29943005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@229573 0039d316-1c4b-4281-b951-d872f2087c98
[PPAPI] Added new Pepper interface PPB_VarResource_Dev.

This interface allows the plugin to create resource vars from PP_Resource, and
also to extract the PP_Resource from a resource var. This facilitates sending
and receiving resources through the JavaScript messaging interface.

Currently only available to plugins with DEV permission.

BUG=177017

Review URL: https://codereview.chromium.org/26464002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@229574 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 229573
SVN changes up to revision 229574