Android: Use external storage for test data.

base/base_paths_android.cc

 // 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.
 
 #include "base/base_paths.h"
 
 #include <unistd.h>
 
 #include "base/android/jni_android.h"
 #include "base/android/path_utils.h"
@@ skipping 25 matching lines @@
     case base::FILE_MODULE: {
       // dladdr didn't work in Android as only the file name was returned.
       NOTIMPLEMENTED();
       return false;
     }
     case base::DIR_MODULE: {
       *result = FilePath(base::android::GetNativeLibraryDirectory());
       return true;
     }
     case base::DIR_SOURCE_ROOT: {
-      // This const is only used for tests. Files in this directory are pushed
-      // to the device via test script.
-      *result = FilePath(FILE_PATH_LITERAL("/data/local/tmp/"));
+      // This const is only used for tests.
+      *result = FilePath(base::android::GetExternalStorageDirectory());
       return true;
     }
     case base::DIR_CACHE: {
       *result = FilePath(base::android::GetCacheDirectory());
       return true;
     }
     case base::DIR_ANDROID_APP_DATA: {
       *result = FilePath(base::android::GetDataDirectory());
       return true;
     }
     case base::DIR_HOME: {
       *result = file_util::GetHomeDir();
       return true;
     }
     case base::DIR_ANDROID_EXTERNAL_STORAGE: {
       *result = FilePath(base::android::GetExternalStorageDirectory());
       return true;
     }
     default: {
       // Note: the path system expects this function to override the default
       // behavior. So no need to log an error if we don't support a given
       // path. The system will just use the default.
       return false;
     }
   }
 }
 
 }  // namespace base