Fix host gcc version detection for android webview.

Android WebView builds use a hermetic host toolchain, so detecting the
host gcc version with compiler_version doesn't work. Hardcode the
current versions used instead.

BUG=377684

Review URL: https://codereview.chromium.org/302633006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@272965 0039d316-1c4b-4281-b951-d872f2087c98
1 file changed