Do not use CalledByNativeUnchecked

android_webview/native/android_protocol_handler.cc

Index: android_webview/native/android_protocol_handler.cc
diff --git a/android_webview/native/android_protocol_handler.cc b/android_webview/native/android_protocol_handler.cc
index e94c5580491c5042a22863fc897cd6920ad9af6b..256aa91cdf28f2c261c920a6c34d9de3dc84d617 100644
--- a/android_webview/native/android_protocol_handler.cc
+++ b/android_webview/native/android_protocol_handler.cc
@@ -146,8 +146,7 @@ AndroidStreamReaderURLRequestJobDelegateImpl::OpenInputStream(
           GetResourceContext(env).obj(),
           jurl.obj());
 
-  // Check and clear pending exceptions.
-  if (ClearException(env) || stream.is_null()) {
+  if (stream.is_null()) {
     DLOG(ERROR) << "Unable to open input stream for Android URL";
     return scoped_ptr<InputStream>();
   }
@@ -182,7 +181,7 @@ bool AndroidStreamReaderURLRequestJobDelegateImpl::GetMimeType(
           env,
           GetResourceContext(env).obj(),
           stream_impl->jobj(), url.obj());
-  if (ClearException(env) || returned_type.is_null())
+  if (returned_type.is_null())
     return false;
 
   *mime_type = base::android::ConvertJavaStringToUTF8(returned_type);