Remove obsolete "android_src" gyp/gn variable.

android_webview/tools/gyp_webview

 #!/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.
 
 # This script runs gyp with the configuration required to build WebView in the
 # Android build system. It is not necessary to source build/android/envsetup.sh
 # before running this script.
 
@@ skipping 20 matching lines @@
 
 DEFINES="OS=android"
 DEFINES+=" android_webview_build=1"
 
 # We need to supply SDK paths relative to the top of the Android tree to make
 # sure the generated Android makefiles are portable, as they will be checked
 # into the Android tree.
 android_sdk=$(python -c \
     "import os.path; print os.path.relpath('${ANDROID_SDK_ROOT}', \
     '${ANDROID_BUILD_TOP}')")
-DEFINES+=" android_src=\$(PWD)"
 DEFINES+=" android_ndk_root=ndk_root_unused_in_webview_build"
 DEFINES+=" android_sdk=\$(PWD)/${android_sdk}"
 DEFINES+=" android_sdk_root=\$(PWD)/${android_sdk}"
 DEFINES+=" android_sdk_version=sdk_version_unused_in_webview_build"
 DEFINES+=" android_toolchain=${ANDROID_TOOLCHAIN}"
 
 # TODO: Get rid of this block, crbug.com/334021
 if [[ -n "$CHROME_ANDROID_WEBVIEW_OFFICIAL_BUILD" ]]; then
   DEFINES+=" tracing_like_official_build=1"
 fi
@@ skipping 23 matching lines @@
   if [ "$PLATFORM" == "${host_platform}-x86" -o "$PLATFORM" == "all" ]; then
     ${GYP} --suffix .${host_platform}-x86 ${EFLAGS} -Dtarget_arch=ia32
   fi
   if [ "$PLATFORM" == "${host_platform}-x86_64" -o "$PLATFORM" == "all" ]; then
     ${GYP} --suffix .${host_platform}-x86_64 ${EFLAGS} -Dtarget_arch=x64
   fi
   if [ "$PLATFORM" == "${host_platform}-mips" -o "$PLATFORM" == "all" ]; then
     ${GYP} --suffix .${host_platform}-mips ${EFLAGS} -Dtarget_arch=mipsel
   fi
 done