Update from https://crrev.com/303153

base/android/library_loader/library_load_from_apk_status_codes.h

Index: base/android/library_loader/library_load_from_apk_status_codes.h
diff --git a/base/android/library_loader/library_load_from_apk_status_codes.h b/base/android/library_loader/library_load_from_apk_status_codes.h
index 21f40bca282f1a2dd0e39e2f6f180dcb617220db..f99eebc89891456ac825dad953d5367fe96e2b48 100644
--- a/base/android/library_loader/library_load_from_apk_status_codes.h
+++ b/base/android/library_loader/library_load_from_apk_status_codes.h
@@ -10,6 +10,8 @@ namespace android {
 
 namespace {
 
+// This enum must be kept in sync with the LibraryLoadFromApkStatus enum in
+// tools/metrics/histograms/histograms.xml.
 // GENERATED_JAVA_ENUM_PACKAGE: org.chromium.base.library_loader
 enum LibraryLoadFromApkStatusCodes {
   // The loader was unable to determine whether the functionality is supported.
@@ -24,11 +26,16 @@ enum LibraryLoadFromApkStatusCodes {
   // The Chromium library was successfully loaded directly from the APK file.
   LIBRARY_LOAD_FROM_APK_STATUS_CODES_SUCCESSFUL = 3,
 
-  // The Chromium library was not page aligned in the APK file.
-  LIBRARY_LOAD_FROM_APK_STATUS_CODES_NOT_ALIGNED = 4,
+  // The Chromium library was successfully loaded using the unpack library
+  // fallback because it was compressed or not page aligned in the APK file.
+  LIBRARY_LOAD_FROM_APK_STATUS_CODES_USED_UNPACK_LIBRARY_FALLBACK = 4,
+
+  // The Chromium library was successfully loaded using the no map executable
+  // support fallback.
+  LIBRARY_LOAD_FROM_APK_STATUS_CODES_USED_NO_MAP_EXEC_SUPPORT_FALLBACK = 5,
 
   // End sentinel.
-  LIBRARY_LOAD_FROM_APK_STATUS_CODES_MAX = 5,
+  LIBRARY_LOAD_FROM_APK_STATUS_CODES_MAX = 6,
 };
 
 }  // namespace