Rename TIntermSelection to TIntermIfElse

Now that ternary nodes are not represented by TIntermSelection any
more, TIntermIfElse is an easier name to understand for newcomers to
the code.

BUG=angleproject:1490
TEST=angle_unittests

Change-Id: Ia1e04e356ab93409400245092a84533d7dfd129d
Reviewed-on: https://chromium-review.googlesource.com/385416
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Olli Etuaho <oetuaho@nvidia.com>
diff --git a/src/compiler/translator/intermOut.cpp b/src/compiler/translator/intermOut.cpp
index 942eadc..2eb0441 100644
--- a/src/compiler/translator/intermOut.cpp
+++ b/src/compiler/translator/intermOut.cpp
@@ -45,7 +45,7 @@
     bool visitBinary(Visit visit, TIntermBinary *) override;
     bool visitUnary(Visit visit, TIntermUnary *) override;
     bool visitTernary(Visit visit, TIntermTernary *node) override;
-    bool visitSelection(Visit visit, TIntermSelection *) override;
+    bool visitIfElse(Visit visit, TIntermIfElse *node) override;
     bool visitAggregate(Visit visit, TIntermAggregate *) override;
     bool visitLoop(Visit visit, TIntermLoop *) override;
     bool visitBranch(Visit visit, TIntermBranch *) override;
@@ -492,7 +492,7 @@
     return false;
 }
 
-bool TOutputTraverser::visitSelection(Visit visit, TIntermSelection *node)
+bool TOutputTraverser::visitIfElse(Visit visit, TIntermIfElse *node)
 {
     TInfoSinkBase &out = sink;