Fallback for loading library from a zipfile.

base/android/linker/linker_jni.cc

Index: base/android/linker/linker_jni.cc
diff --git a/base/android/linker/linker_jni.cc b/base/android/linker/linker_jni.cc
index a545c528ed336e44953138c9a51f8ad5647a1bf4..a42010100eda699d660ef58f31cea602b9a52a9c 100644
--- a/base/android/linker/linker_jni.cc
+++ b/base/android/linker/linker_jni.cc
@@ -350,6 +350,18 @@ jboolean LoadLibrary(JNIEnv* env,
       static_cast<size_t>(load_address), lib_info_obj, opener);
 }
 
+const size_t kMaxFilenameInZip = 256;
+jstring LibraryFilenameInZipFile(JNIEnv* env, jclass clazz, jstring lib_name) {
+  String lib_name_str(env, lib_name);
+  char buffer[kMaxFilenameInZip + 1];
+  if (CRAZY_STATUS_SUCCESS != crazy_library_filename_in_zip_file(
+          lib_name_str.c_str(), buffer, sizeof(buffer))) {
+    LOG_ERROR("Failure to get library filename from zipfile");
+    buffer[0] = '\0';
+  }
+  return env->NewStringUTF(buffer);
+}
+
 // Load a library from a zipfile with the chromium linker. The
 // library in the zipfile must be uncompressed and page aligned.
 // The basename of the library is given. The library is expected
@@ -622,6 +634,12 @@ const JNINativeMethod kNativeMethods[] = {
      ")"
      "Z",
      reinterpret_cast<void*>(&LoadLibrary)},
+    {"nativeLibraryFilenameInZipFile",
+     "("
+     "Ljava/lang/String;"
+     ")"
+     "Ljava/lang/String;",
+     reinterpret_cast<void*>(&LibraryFilenameInZipFile)},
     {"nativeLoadLibraryInZipFile",
      "("
      "Ljava/lang/String;"