Remove static cache in GssResourceGenerator

With incremental compiler, we don't need a static cache anymore.

Change-Id: I21252d601b07b37a331e0dad1f444718b4d7c461
(cherry picked from commit b1635be34523d7f078a7fd41fc2a14f2fafff85c)
Add Chrome 38 globals

Change-Id: Iab8c90a0a00a877456ed987291eaa3f755fae809
(cherry picked from commit 1c781f7d8efd76d721099cbd2bace913f6030739)