Revert "ART: Refactor SsaBuilder for more precise typing info"

This reverts commit d9510dfc32349eeb4f2145c801f7ba1d5bccfb12.

Bug: 26208284

Bug: 24252151
Bug: 24252100
Bug: 22538329
Bug: 25786318

Change-Id: I5f491becdf076ff51d437d490405ec4e1586c010
diff --git a/compiler/optimizing/graph_checker_test.cc b/compiler/optimizing/graph_checker_test.cc
index d10df4c..fee56c7 100644
--- a/compiler/optimizing/graph_checker_test.cc
+++ b/compiler/optimizing/graph_checker_test.cc
@@ -17,6 +17,8 @@
 #include "graph_checker.h"
 #include "optimizing_unit_test.h"
 
+#include "gtest/gtest.h"
+
 namespace art {
 
 /**
@@ -41,6 +43,7 @@
   return graph;
 }
 
+
 static void TestCode(const uint16_t* data) {
   ArenaPool pool;
   ArenaAllocator allocator(&pool);
@@ -58,7 +61,8 @@
   HGraph* graph = CreateCFG(&allocator, data);
   ASSERT_NE(graph, nullptr);
 
-  TransformToSsa(graph);
+  graph->BuildDominatorTree();
+  graph->TransformToSsa();
 
   SSAChecker ssa_checker(graph);
   ssa_checker.Run();
@@ -141,9 +145,7 @@
   ASSERT_FALSE(graph_checker.IsValid());
 }
 
-class SSACheckerTest : public CommonCompilerTest {};
-
-TEST_F(SSACheckerTest, SSAPhi) {
+TEST(SSAChecker, SSAPhi) {
   // This code creates one Phi function during the conversion to SSA form.
   const uint16_t data[] = ONE_REGISTER_CODE_ITEM(
     Instruction::CONST_4 | 0 | 0,