Compile specific parts of the Android build with -O2.

base/third_party/nspr/BUILD.gn

Index: base/third_party/nspr/BUILD.gn
diff --git a/base/third_party/nspr/BUILD.gn b/base/third_party/nspr/BUILD.gn
index b1cf6487825e4367e23c242b2b3d87078546cf5f..ddbcbc181fff12bb0ce1fe33018850f50586a4db 100644
--- a/base/third_party/nspr/BUILD.gn
+++ b/base/third_party/nspr/BUILD.gn
@@ -12,4 +12,9 @@ source_set("nspr") {
   # In GYP this project is part of base, so it uses the base implementation
   # define. TODO(brettw) rename this define.
   defines = [ "BASE_IMPLEMENTATION" ]
+
+  if (is_android && !is_debug) {
+    configs -= [ "//build/config/compiler:optimize" ]
+    configs += [ "//build/config/compiler:optimize_max" ]
+  }
 }