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/ParseContext.cpp b/src/compiler/translator/ParseContext.cpp
index e2959d7..de9295b 100644
--- a/src/compiler/translator/ParseContext.cpp
+++ b/src/compiler/translator/ParseContext.cpp
@@ -1077,14 +1077,14 @@
 //
 // Return the function symbol if found, otherwise 0.
 //
-const TFunction* TParseContext::findFunction(const TSourceLoc& line, TFunction* call, int inputShaderVersion, bool *builtIn)
+const TFunction* TParseContext::findFunction(const TSourceLoc& line, TFunction* call, int shaderVersion, bool *builtIn)
 {
     // First find by unmangled name to check whether the function name has been
     // hidden by a variable name or struct typename.
     // If a function is found, check for one with a matching argument list.
-    const TSymbol* symbol = symbolTable.find(call->getName(), inputShaderVersion, builtIn);
+    const TSymbol* symbol = symbolTable.find(call->getName(), shaderVersion, builtIn);
     if (symbol == 0 || symbol->isFunction()) {
-        symbol = symbolTable.find(call->getMangledName(), inputShaderVersion, builtIn);
+        symbol = symbolTable.find(call->getMangledName(), shaderVersion, builtIn);
     }
 
     if (symbol == 0) {