target_cpu -> current_cpu in cc/BUILD.gn

BUG=616819
CQ_INCLUDE_TRYBOTS=tryserver.blink:linux_blink_rel

Review-Url: https://codereview.chromium.org/2035753005
Cr-Commit-Position: refs/heads/master@{#398569}

diff --git a/cc/BUILD.gn b/cc/BUILD.gn
index 3ec648e..bb0d4da5 100644
--- a/cc/BUILD.gn
+++ b/cc/BUILD.gn

@@ -531,7 +531,7 @@
     "trees/tree_synchronizer.h",
   ]
 
-  if (target_cpu == "x86" || target_cpu == "x64") {
+  if (current_cpu == "x86" || current_cpu == "x64") {
     sources += [
       "raster/texture_compressor_etc1_sse.cc",
       "raster/texture_compressor_etc1_sse.h",