New build flag system, convert Google Now flag

build/common.gypi

Index: build/common.gypi
diff --git a/build/common.gypi b/build/common.gypi
index 5c2098b146e0919ad2449ed7656511ac06b1d65d..0b20f04ba433942fe868703a94c195c47c9b838e 100644
--- a/build/common.gypi
+++ b/build/common.gypi
@@ -543,9 +543,6 @@
       # Enable Chrome browser extensions
       'enable_extensions%': 1,
 
-      # Enable Google Now.
-      'enable_google_now%': 1,
-
       # Enable basic printing support and UI.
       'enable_basic_printing%': 1,
 
@@ -815,7 +812,6 @@
 
         ['OS=="android"', {
           'enable_extensions%': 0,
-          'enable_google_now%': 0,
           'cld2_table_size%': 0,
           'enable_themes%': 0,
           'remoting%': 0,
@@ -862,7 +858,6 @@
         ['OS=="ios"', {
           'disable_ftp_support%': 1,
           'enable_extensions%': 0,
-          'enable_google_now%': 0,
           'cld2_table_size%': 0,
           'enable_basic_printing%': 0,
           'enable_print_preview%': 0,
@@ -1216,7 +1211,6 @@
     'enable_print_preview%': '<(enable_print_preview)',
     'enable_spellcheck%': '<(enable_spellcheck)',
     'use_browser_spellchecker%': '<(use_browser_spellchecker)',
-    'enable_google_now%': '<(enable_google_now)',
     'cld_version%': '<(cld_version)',
     'cld2_table_size%': '<(cld2_table_size)',
     'enable_captive_portal_detection%': '<(enable_captive_portal_detection)',
@@ -2178,9 +2172,6 @@
       ['enable_settings_app==1', {
         'grit_defines': ['-D', 'enable_settings_app'],
       }],
-      ['enable_google_now==1', {
-        'grit_defines': ['-D', 'enable_google_now'],
-      }],
       ['use_concatenated_impulse_responses==1', {
         'grit_defines': ['-D', 'use_concatenated_impulse_responses'],
       }],
@@ -2993,9 +2984,6 @@
       ['enable_background==1', {
         'defines': ['ENABLE_BACKGROUND=1'],
       }],
-      ['enable_google_now==1', {
-        'defines': ['ENABLE_GOOGLE_NOW=1'],
-      }],
       ['enable_basic_printing==1 or enable_print_preview==1', {
         # Convenience define for ENABLE_BASIC_PRINTING || ENABLE_PRINT_PREVIEW.
         'defines': ['ENABLE_PRINTING=1'],