Android WebView: fix aidl on mac hosts.

build/android/envsetup_functions.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.
 
 # Defines functions for envsetup.sh which sets up environment for building
 # Chromium on Android.  The build can be either use the Android NDK/SDK or
 # android source tree.  Each has a unique init function which calls functions
 # prefixed with "common_" that is common for both environment setups.
@@ skipping 252 matching lines @@
 ${ANDROID_SDK_VERSION}
 
   common_vars_defines
 
   # 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}', \
       '${ANDROID_BUILD_TOP}')")
-  ANDROID_SDK_TOOLS=$(python -c \
-      "import os.path; \
-      print os.path.relpath('${ANDROID_SDK_ROOT}/../tools/linux', \
-      '${ANDROID_BUILD_TOP}')")
+  case "${host_os}" in
+    "linux")
+      ANDROID_SDK_TOOLS=$(python -c \
+          "import os.path; \
+          print os.path.relpath('${ANDROID_SDK_ROOT}/../tools/linux', \
+          '${ANDROID_BUILD_TOP}')")
+      ;;
+    "mac")
+      ANDROID_SDK_TOOLS=$(python -c \
+          "import os.path; \
+          print os.path.relpath('${ANDROID_SDK_ROOT}/../tools/darwin', \
+          '${ANDROID_BUILD_TOP}')")
+      ;;
+  esac
   DEFINES+=" android_build_type=1"
   DEFINES+=" android_src=\$(GYP_ABS_ANDROID_TOP_DIR)"
   DEFINES+=" android_sdk=\$(GYP_ABS_ANDROID_TOP_DIR)/${ANDROID_SDK}"
   DEFINES+=" android_sdk_root=\$(GYP_ABS_ANDROID_TOP_DIR)/${ANDROID_SDK}"
   DEFINES+=" android_sdk_tools=\$(GYP_ABS_ANDROID_TOP_DIR)/${ANDROID_SDK_TOOLS}"
   DEFINES+=" android_sdk_version=${ANDROID_SDK_VERSION}"
   DEFINES+=" android_toolchain=${ANDROID_TOOLCHAIN}"
   export GYP_DEFINES="${DEFINES}"
 
   export GYP_GENERATORS="android"
 
   export GYP_GENERATOR_FLAGS="${GYP_GENERATOR_FLAGS} default_target=All"
   export GYP_GENERATOR_FLAGS="${GYP_GENERATOR_FLAGS} limit_to_target_all=1"
   export GYP_GENERATOR_FLAGS="${GYP_GENERATOR_FLAGS} auto_regeneration=0"
 
   export CHROMIUM_GYP_FILE="${CHROME_SRC}/android_webview/all_webview.gyp"
 }