Split TIntermDeclaration from TIntermAggregate

The new class TIntermDeclaration is now used for struct, interface
block and variable declarations. TIntermDeclaration nodes do not have
a type - rather the type is stored in each child node. The types may
differ in case the declaration is a series of array declarators with
mismatching sizes.

TIntermAggregate is still used for function calls, function
prototypes, function parameter lists and invariant declarations.

BUG=angleproject:1490
TEST=angle_unittests

Change-Id: I0457188f354481470855f61ac1c878fc2579b1d1
Reviewed-on: https://chromium-review.googlesource.com/400023
Commit-Queue: Olli Etuaho <oetuaho@nvidia.com>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
diff --git a/src/compiler/translator/ExpandIntegerPowExpressions.cpp b/src/compiler/translator/ExpandIntegerPowExpressions.cpp
index 9409c01..c5ff7b3 100644
--- a/src/compiler/translator/ExpandIntegerPowExpressions.cpp
+++ b/src/compiler/translator/ExpandIntegerPowExpressions.cpp
@@ -116,7 +116,7 @@
     TIntermTyped *lhs = sequence->at(0)->getAsTyped();
     ASSERT(lhs);
 
-    TIntermAggregate *init = createTempInitDeclaration(lhs);
+    TIntermDeclaration *init = createTempInitDeclaration(lhs);
     TIntermTyped *current  = createTempSymbol(lhs->getType());
 
     insertStatementInParentBlock(init);