Update from https://crrev.com/316786

base/android/build_info.h

Index: base/android/build_info.h
diff --git a/base/android/build_info.h b/base/android/build_info.h
index cef8145fa6a47d0f44f375b25941280dfbbcd98c..e4e84e85baa865eb0c8603234864eb234f9f9e72 100644
--- a/base/android/build_info.h
+++ b/base/android/build_info.h
@@ -15,6 +15,19 @@
 namespace base {
 namespace android {
 
+// This enumeration maps to the values returned by BuildInfo::sdk_int(),
+// indicating the Android release associated with a given SDK version.
+enum SdkVersion {
+  SDK_VERSION_ICE_CREAM_SANDWICH = 14,
+  SDK_VERSION_ICE_CREAM_SANDWICH_MR1 = 15,
+  SDK_VERSION_JELLY_BEAN = 16,
+  SDK_VERSION_JELLY_BEAN_MR1 = 17,
+  SDK_VERSION_JELLY_BEAN_MR2 = 18,
+  SDK_VERSION_KITKAT = 19,
+  SDK_VERSION_KITKAT_WEAR = 20,
+  SDK_VERSION_LOLLIPOP = 21
+};
+
 // BuildInfo is a singleton class that stores android build and device
 // information. It will be called from Android specific code and gets used
 // primarily in crash reporting.