Asynchronously pre-fault the native library pages.

third_party/android_crazy_linker/src/src/crazy_linker_zip.h

Index: third_party/android_crazy_linker/src/src/crazy_linker_zip.h
diff --git a/third_party/android_crazy_linker/src/src/crazy_linker_zip.h b/third_party/android_crazy_linker/src/src/crazy_linker_zip.h
index cee3efe770ae9797600b487d27ea186bdc27b8d3..b95edce24a27e3c80c244a1ae9ca5945a0dc6dc9 100644
--- a/third_party/android_crazy_linker/src/src/crazy_linker_zip.h
+++ b/third_party/android_crazy_linker/src/src/crazy_linker_zip.h
@@ -9,6 +9,19 @@
 
 namespace crazy {
 
+struct OffsetSize {
+  int offset;
+  int size;
+
+  OffsetSize(int offset, int size) : offset(offset), size(size) {}
+};
+
+
+// Find "filename" in the specified "zip_file" and return its (offset, size).
+// The offset is CRAZY_OFFSET_FAILED on error or if the file is compressed.
+OffsetSize FindStartOffsetAndLengthOfFileInZipFile(const char* zip_file,
+						   const char* filename);
+
 // Find "filename" in the specified "zip_file" and return the offset
 // in the file of the start of the data for the file. Return
 // CRAZY_OFFSET_FAILED on error or if the file is compressed. This routine