Remove 2 unused defines USE_CHROMIUM_SKIA and SK_BUILD_FOR_CHROMIUM

include/core/SkPreConfig.h

 
 /*
  * Copyright 2006 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #ifndef SkPreConfig_DEFINED
@@ skipping 35 matching lines @@
 
 /* Even if the user only defined the framework variant we still need to build
  * the default (NDK-compliant) Android code. Therefore, when attempting to
  * include/exclude something from the framework variant check first that we are
  * building for Android then check the status of the framework define.
  */
 #if defined(SK_BUILD_FOR_ANDROID_FRAMEWORK) && !defined(SK_BUILD_FOR_ANDROID)
     #define SK_BUILD_FOR_ANDROID
 #endif
 
-
-// USE_CHROMIUM_SKIA is defined when building Skia for the Chromium
-// browser.
-#if defined(USE_CHROMIUM_SKIA)
-    #define SK_BUILD_FOR_CHROMIUM
-#endif
-
 //////////////////////////////////////////////////////////////////////
 
 #if !defined(SK_DEBUG) && !defined(SK_RELEASE)
     #ifdef NDEBUG
         #define SK_RELEASE
     #else
         #define SK_DEBUG
     #endif
 #endif
 
@@ skipping 179 matching lines @@
  *
  * NOTE: Clang/ARM (r161757) does not support the 'optimize' attribute.
  */
 #if SK_HAS_ATTRIBUTE(optimize)
 #   define SK_ATTRIBUTE_OPTIMIZE_O1 __attribute__((optimize("O1")))
 #else
 #   define SK_ATTRIBUTE_OPTIMIZE_O1 /* nothing */
 #endif
 
 #endif