Fix ResourceLoadTiming Resolution Issue 4th step - remove unused macros from common.gypi

build/common.gypi

Index: build/common.gypi
diff --git a/build/common.gypi b/build/common.gypi
index 5516c63fb77467ce06a27fb98cbce8b1f70b2b7c..5e36f7fa2b1364b3e10a8c413d59b8d670f37d71 100644
--- a/build/common.gypi
+++ b/build/common.gypi
@@ -45,9 +45,6 @@
           # Disable viewport meta tag by default.
           'enable_viewport%': 0,
 
-          # Enable DoubleResourceLoadTiming support.
-          'enable_double_resource_load_timing%': 1,
-
           # Enable HiDPI support.
           'enable_hidpi%': 0,
 
@@ -104,7 +101,6 @@
         'use_ozone%': '<(use_ozone)',
         'use_openssl%': '<(use_openssl)',
         'enable_viewport%': '<(enable_viewport)',
-        'enable_double_resource_load_timing%': '<(enable_double_resource_load_timing)',
         'enable_hidpi%': '<(enable_hidpi)',
         'enable_touch_ui%': '<(enable_touch_ui)',
         'buildtype%': '<(buildtype)',
@@ -186,7 +182,6 @@
       'use_ozone%': '<(use_ozone)',
       'use_openssl%': '<(use_openssl)',
       'enable_viewport%': '<(enable_viewport)',
-      'enable_double_resource_load_timing%': '<(enable_double_resource_load_timing)',
       'enable_hidpi%': '<(enable_hidpi)',
       'enable_touch_ui%': '<(enable_touch_ui)',
       'android_webview_build%': '<(android_webview_build)',
@@ -751,7 +746,6 @@
     'linux_fpic%': '<(linux_fpic)',
     'chromeos%': '<(chromeos)',
     'enable_viewport%': '<(enable_viewport)',
-    'enable_double_resource_load_timing%': '<(enable_double_resource_load_timing)',
     'enable_hidpi%': '<(enable_hidpi)',
     'enable_touch_ui%': '<(enable_touch_ui)',
     'use_xi2_mt%':'<(use_xi2_mt)',
@@ -1855,9 +1849,6 @@
           ],
         },
       }],
-      ['enable_double_resource_load_timing==1', {
-        'defines': ['ENABLE_DOUBLE_RESOURCE_LOAD_TIMING'],
-      }],
       ['enable_rlz==1', {
         'defines': ['ENABLE_RLZ'],
       }],