Android content shell bringup.

build/android/envsetup.sh

 #!/bin/bash
 
 # Copyright (c) 2012 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.
 
 # Sets up environment for building Chromium on Android. Only Android NDK,
 # Revision 6b on Linux or Mac is offically supported.
 #
 # To run this script, the system environment ANDROID_NDK_ROOT must be set
@@ skipping 44 matching lines @@
     ;;
   *x86*)
     DEFINES=" target_arch=ia32 use_libffmpeg=0"
     toolchain_arch="x86-4.4.3"
     ;;
   *)
     echo "TARGET_PRODUCT: ${TARGET_PRODUCT} is not supported." >& 2
     return 1
 esac
 
+# If we are building NDK/SDK, and in the upstream (open source) tree,
+# define a special variable for bringup purposes.
+case "${ANDROID_BUILD_TOP-undefined}" in
+  "undefined")
+    DEFINES+=" android_upstream_bringup=1"
+    ;;
+esac
+
 toolchain_path="${ANDROID_NDK_ROOT}/toolchains/${toolchain_arch}/prebuilt/"
 export ANDROID_TOOLCHAIN="${toolchain_path}/${toolchain_dir}/bin/"
 
 export ANDROID_SDK_VERSION="15"
 
 # Needed by android antfiles when creating apks.
 export ANDROID_SDK_HOME=${ANDROID_SDK_ROOT}
 
 # Add Android SDK/NDK tools to system path.
 export PATH=$PATH:${ANDROID_NDK_ROOT}
@@ skipping 59 matching lines @@
 export GYP_DEFINES="${DEFINES}"
 
 # Use the "android" flavor of the Makefile generator for both Linux and OS X.
 export GYP_GENERATORS="make-android"
 
 # Use our All target as the default
 export GYP_GENERATOR_FLAGS="${GYP_GENERATOR_FLAGS} default_target=All"
 
 # We want to use our version of "all" targets.
 export CHROMIUM_GYP_FILE="${CHROME_SRC}/build/all_android.gyp"