Add preprocess bison files to the gyp files.

We had accidentally left out the y and l files from our generation
scripts, causing us to miss several instances of updated enum names.

BUG=angle:550
Change-Id: I8790742fbaab5435e4c0db4f61c3e8194a231550
Reviewed-on: https://chromium-review.googlesource.com/186972
Reviewed-by: Nicolas Capens <nicolascapens@chromium.org>
Tested-by: Jamie Madill <jmadill@chromium.org>
diff --git a/src/compiler/preprocessor/ExpressionParser.cpp b/src/compiler/preprocessor/ExpressionParser.cpp
index 9d8cc42..7c6adc6 100644
--- a/src/compiler/preprocessor/ExpressionParser.cpp
+++ b/src/compiler/preprocessor/ExpressionParser.cpp
@@ -510,9 +510,9 @@
 /* YYRLINE[YYN] -- source line where rule number YYN was defined.  */
 static const yytype_uint8 yyrline[] =
 {
-       0,    91,    91,    98,    99,   102,   105,   108,   111,   114,
-     117,   120,   123,   126,   129,   132,   135,   138,   141,   144,
-     157,   170,   173,   176,   179,   182,   185
+       0,    97,    97,   104,   105,   108,   111,   114,   117,   120,
+     123,   126,   129,   132,   135,   138,   141,   144,   147,   150,
+     163,   176,   179,   182,   185,   188,   191
 };
 #endif