Get views and views_unittests to build w/ use_aura=1

build/build_config.h

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // This file adds defines about the platform we're currently building on.
 //  Operating System:
 //    OS_WIN / OS_MACOSX / OS_LINUX / OS_POSIX (MACOSX or LINUX)
 //  Compiler:
 //    COMPILER_MSVC / COMPILER_GCC
 //  Processor:
@@ skipping 25 matching lines @@
 #elif defined(__OpenBSD__)
 #define OS_OPENBSD 1
 #define TOOLKIT_GTK
 #elif defined(__sun)
 #define OS_SOLARIS 1
 #define TOOLKIT_GTK
 #else
 #error Please add support for your platform in build/build_config.h
 #endif
 
-// A flag derived from the above flags, used to cover GTK code in
-// both TOOLKIT_GTK and TOOLKIT_VIEWS.
-#if defined(TOOLKIT_GTK) || (defined(TOOLKIT_VIEWS) && !defined(OS_WIN))
-#define TOOLKIT_USES_GTK 1
-#endif
-
 #if defined(OS_LINUX) || defined(OS_FREEBSD) || defined(OS_OPENBSD) || \
     defined(OS_SOLARIS) || defined(OS_ANDROID)
 #if !defined(USE_OPENSSL)
 #define USE_NSS 1  // Default to use NSS for crypto, unless OpenSSL is chosen.
 #endif
 #ifndef OS_ANDROID
 #define USE_X11 1  // Use X for graphics.
 #endif
 #endif
 
@@ skipping 82 matching lines @@
 #if defined(OS_ANDROID)
 // The compiler thinks std::string::const_iterator and "const char*" are
 // equivalent types.
 #define STD_STRING_ITERATOR_IS_CHAR_POINTER
 // The compiler thinks base::string16::const_iterator and "char16*" are
 // equivalent types.
 #define BASE_STRING16_ITERATOR_IS_CHAR16_POINTER
 #endif
 
 #endif  // BUILD_BUILD_CONFIG_H_