translator/Compiler.cpp: fixup includes

A stray iostream got introduced in
28b6528ca2119d6715bb5e9eafa5a2dc8c968361

BUG=angleproject:1522

Change-Id: Ib0b14b47d4786309ec2d39acb5531f3772b91f20
Reviewed-on: https://chromium-review.googlesource.com/386256
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Commit-Queue: Corentin Wallez <cwallez@chromium.org>
diff --git a/src/compiler/translator/Compiler.cpp b/src/compiler/translator/Compiler.cpp
index e256f87..74c0104 100644
--- a/src/compiler/translator/Compiler.cpp
+++ b/src/compiler/translator/Compiler.cpp
@@ -4,9 +4,14 @@
 // found in the LICENSE file.
 //
 
+#include "compiler/translator/Compiler.h"
+
+#include <sstream>
+
+#include "angle_gl.h"
+#include "common/utilities.h"
 #include "compiler/translator/AddAndTrueToLoopCondition.h"
 #include "compiler/translator/Cache.h"
-#include "compiler/translator/Compiler.h"
 #include "compiler/translator/CallDAG.h"
 #include "compiler/translator/DeferGlobalInitializers.h"
 #include "compiler/translator/EmulateGLFragColorBroadcast.h"
@@ -26,10 +31,6 @@
 #include "compiler/translator/ValidateOutputs.h"
 #include "compiler/translator/VariablePacker.h"
 #include "third_party/compiler/ArrayBoundsClamper.h"
-#include "angle_gl.h"
-#include "common/utilities.h"
-
-#include <iostream>
 
 namespace
 {