Revert "Java: Convert Google HTTP client API parseAs sink to CSV format"

This reverts commit 3e53484.

Author: tamasvajk

java/ql/src/semmle/code/java/dataflow/ExternalFlow.qll

@@ -76,7 +76,6 @@ private module Frameworks {
   private import semmle.code.java.frameworks.ApacheHttp
   private import semmle.code.java.frameworks.apache.Lang
   private import semmle.code.java.frameworks.guava.Guava
-  private import semmle.code.java.frameworks.google.GoogleHttpClientApi
   private import semmle.code.java.security.ResponseSplitting
   private import semmle.code.java.security.XSS
 }

java/ql/src/semmle/code/java/frameworks/google/GoogleHttpClientApi.qll

@@ -2,7 +2,14 @@ import java
 import semmle.code.java.Serializability
 import semmle.code.java.dataflow.DataFlow
 import semmle.code.java.dataflow.DataFlow5
-private import semmle.code.java.dataflow.ExternalFlow
+
+/** The method `parseAs` in `com.google.api.client.http.HttpResponse`. */
+private class ParseAsMethod extends Method {
+  ParseAsMethod() {
+    this.getDeclaringType().hasQualifiedName("com.google.api.client.http", "HttpResponse") and
+    this.hasName("parseAs")
+  }
+}
 
 private class TypeLiteralToParseAsFlowConfiguration extends DataFlow5::Configuration {
   TypeLiteralToParseAsFlowConfiguration() {
@@ -11,17 +18,16 @@ private class TypeLiteralToParseAsFlowConfiguration extends DataFlow5::Configura
 
   override predicate isSource(DataFlow::Node source) { source.asExpr() instanceof TypeLiteral }
 
-  override predicate isSink(DataFlow::Node sink) { sinkNode(sink, "google-parse-as") }
+  override predicate isSink(DataFlow::Node sink) {
+    exists(MethodAccess ma |
+      ma.getAnArgument() = sink.asExpr() and
+      ma.getMethod() instanceof ParseAsMethod
+    )
+  }
 
   TypeLiteral getSourceWithFlowToParseAs() { hasFlow(DataFlow::exprNode(result), _) }
 }
 
-private class ParseAsSinkModel extends SinkModelCsv {
-  override predicate row(string row) {
-    row = ["com.google.api.client.http;HttpResponse;false;parseAs;;;Argument;google-parse-as"]
-  }
-}
-
 /** A field that is deserialized by `HttpResponse.parseAs`. */
 class HttpResponseParseAsDeserializableField extends DeserializableField {
   HttpResponseParseAsDeserializableField() {