Update from https://crrev.com/329939

base/android/jni_android.h

Index: base/android/jni_android.h
diff --git a/base/android/jni_android.h b/base/android/jni_android.h
index 504eb85707e28283113d67e834bc32867441fdfe..9df904100edcfaea37fda0834eec1ead4d13628a 100644
--- a/base/android/jni_android.h
+++ b/base/android/jni_android.h
@@ -130,6 +130,10 @@ BASE_EXPORT bool ClearException(JNIEnv* env);
 // This function will call CHECK() macro if there's any pending exception.
 BASE_EXPORT void CheckException(JNIEnv* env);
 
+// This returns a string representation of the java stack trace.
+BASE_EXPORT std::string GetJavaExceptionInfo(JNIEnv* env,
+                                             jthrowable java_throwable);
+
 }  // namespace android
 }  // namespace base