Eliminate SkPicture-related flags Chromium no longer requires

This was originally reverted in r14349 (Restore SkPicture-related guard flags for Chrome - https://codereview.chromium.org/255543004/) due to Android WebView compile failures. These failures should be fixed in Chromium r267210 (Fixing Chromium Android build's reliance on old SkPicture recording API - https://codereview.chromium.org/251843005/)

R=bsalomon@google.com

Author: robertphillips@google.com

Review URL: https://codereview.chromium.org/254333003

git-svn-id: http://skia.googlecode.com/svn/trunk/gyp@14471 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/skia_for_chromium_defines.gypi b/skia_for_chromium_defines.gypi
index 1ec908e..98dc55c 100644
--- a/skia_for_chromium_defines.gypi
+++ b/skia_for_chromium_defines.gypi
@@ -17,10 +17,6 @@
       'SK_SUPPORT_LEGACY_GETTOPDEVICE',
       'SK_SUPPORT_LEGACY_N32_NAME',
       'SK_SUPPORT_LEGACY_PROCXFERMODE',
-      'SK_SUPPORT_LEGACY_DERIVED_PICTURE_CLASSES',
-      'SK_SUPPORT_LEGACY_PICTURE_HEADERS',
-      'SK_SUPPORT_LEGACY_PICTURE_CAN_RECORD',
-      'SK_SUPPORT_DEPRECATED_RECORD_FLAGS',
       'SK_SUPPORT_LEGACY_BLURMASKFILTER_STYLE',
     ],
   },