Drop support for Compact Language Detector v1.

build/common.gypi

Index: build/common.gypi
diff --git a/build/common.gypi b/build/common.gypi
index 74836e7ab5931378d7b5a7d0853e031a1ba6e1aa..c4c2d88b6447c57d0cbcdd4451ce0a064d8fe3df 100644
--- a/build/common.gypi
+++ b/build/common.gypi
@@ -547,13 +547,7 @@
       # enable_basic_printing. It's possible to build Chrome with preview only.
       'enable_print_preview%': 1,
 
-      # Set the version of CLD.
-      #   1: (DEPRECATED! See http://crbug.com/528305 for info) Use only CLD1.
-      #   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, high accuracy
       #   2: Large tables, higher accuracy
@@ -1252,7 +1246,6 @@
     'enable_print_preview%': '<(enable_print_preview)',
     'enable_spellcheck%': '<(enable_spellcheck)',
     'use_browser_spellchecker%': '<(use_browser_spellchecker)',
-    'cld_version%': '<(cld_version)',
     'cld2_table_size%': '<(cld2_table_size)',
     'enable_captive_portal_detection%': '<(enable_captive_portal_detection)',
     'disable_file_support%': '<(disable_file_support)',
@@ -2663,7 +2656,6 @@
     'defines': [
       # Don't use deprecated V8 APIs anywhere.
       'V8_DEPRECATION_WARNINGS',
-      'CLD_VERSION=<(cld_version)',
     ],
     'include_dirs': [
       '<(SHARED_INTERMEDIATE_DIR)',