Revert "Fix lots of variable shadowing in ANGLE"

Caused WebGL CTS failures on the texture-npot test:
https://www.khronos.org/registry/webgl/sdk/tests/conformance/textures/texture-npot.html

This reverts commit c67e6e9fade44ef8938724e82db11db725e9c8e5.

Change-Id: I089e99859231e0d657084ac3647257c650a9da92
Reviewed-on: https://chromium-review.googlesource.com/243041
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Tested-by: Geoff Lang <geofflang@chromium.org>
diff --git a/src/compiler/translator/OutputGLSLBase.cpp b/src/compiler/translator/OutputGLSLBase.cpp
index 8d8830c..b98f5d5 100644
--- a/src/compiler/translator/OutputGLSLBase.cpp
+++ b/src/compiler/translator/OutputGLSLBase.cpp
@@ -651,11 +651,11 @@
         for (TIntermSequence::const_iterator iter = node->getSequence()->begin();
              iter != node->getSequence()->end(); ++iter)
         {
-            TIntermNode *curNode = *iter;
-            ASSERT(curNode != NULL);
-            curNode->traverse(this);
+            TIntermNode *node = *iter;
+            ASSERT(node != NULL);
+            node->traverse(this);
 
-            if (isSingleStatement(curNode))
+            if (isSingleStatement(node))
                 out << ";\n";
         }
         decrementDepth();