Modify how gpu.gyp includes angle.gyp.

Instead of including dependencies on angle.gyp and then removing
them if skia_angle is not true, only include angle.gyp to begin
with skia_angle is true.

This allows gyp_to_android.py to work when run in the Android tree,
where we don't have third_party/externals (since we do only a git
merge, and no gclient sync.

R=djsollen@google.com, robertphillips@google.com, bsalomon@google.com

Author: scroggo@google.com

Review URL: https://codereview.chromium.org/178223015

git-svn-id: http://skia.googlecode.com/svn/trunk@13618 2bbb7eff-a529-9590-31e7-b0007b416f81
1 file changed