Increase nesting in conditional expressions. Fix #122.

test/regression/122.unit

Index: test/regression/122.unit
diff --git a/test/regression/122.unit b/test/regression/122.unit
new file mode 100644
index 0000000000000000000000000000000000000000..b4a0794ce5f7bf2eecb79b85ee9c52d2c1a0bc04
--- /dev/null
+++ b/test/regression/122.unit
@@ -0,0 +1,26 @@
+>>>
+var xsrfValue = _urlIsSameOrigin(url) ?
+    _cookies[xsrfCookieName != null ?
+    xsrfCookieName :
+    defaults.xsrfCookieName] :
+    null;
+<<<
+var xsrfValue = _urlIsSameOrigin(url) ?
+    _cookies[xsrfCookieName != null ?
+        xsrfCookieName :
+        defaults.xsrfCookieName] :
+    null;
+>>>
+class _Streams {
+  _Streams(this._scope, this._exceptionHandler, _Streams inheritStreams)
+      : _typeCounts = inheritStreams == null ?
+      new HashMap<String, int>() :
+      new HashMap.from(inheritStreams._typeCounts);
+}
+<<<
+class _Streams {
+  _Streams(this._scope, this._exceptionHandler, _Streams inheritStreams)
+      : _typeCounts = inheritStreams == null ?
+          new HashMap<String, int>() :
+          new HashMap.from(inheritStreams._typeCounts);
+}