Add a switch to control which CLD2 tables are used at build time.

build/common.gypi

Index: build/common.gypi
diff --git a/build/common.gypi b/build/common.gypi
index 1dc3dcd6d8bc7594c0e782b0dea0abc119a894d5..2a102bbfd302e99af88af9582ed28c4ac767488a 100644
--- a/build/common.gypi
+++ b/build/common.gypi
@@ -421,6 +421,14 @@
       #   2: Use only CLD2.
       'cld_version%': 2,
 
+      # For CLD2, the size of the tables that should be included in the build
+      # Only evaluated if cld_version == 2.
+      # See third_party/cld_2/cld_2.gyp for more information.
+      #   0: Small tables, lower accuracy
+      #   1: Medium tables, medium accuracy
+      #   2: Large tables, high accuracy
+      'cld2_table_size%': 2,
+
       # Enable spell checker.
       'enable_spellcheck%': 1,
 
@@ -974,6 +982,7 @@
     'enable_spellcheck%': '<(enable_spellcheck)',
     'enable_google_now%': '<(enable_google_now)',
     'cld_version%': '<(cld_version)',
+    'cld2_table_size%': '<(cld2_table_size)',
     'enable_captive_portal_detection%': '<(enable_captive_portal_detection)',
     'disable_ftp_support%': '<(disable_ftp_support)',
     'enable_task_manager%': '<(enable_task_manager)',