[csa] Fix CSA::ToUint32 rounding for negative HeapNumbers

test/cctest/compiler/function-tester.h

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_CCTEST_COMPILER_FUNCTION_TESTER_H_
 #define V8_CCTEST_COMPILER_FUNCTION_TESTER_H_
 
 #include "src/handles.h"
 #include "test/cctest/cctest.h"
 
@@ skipping 22 matching lines @@
   Handle<JSFunction> function;
 
   MaybeHandle<Object> Call();
   MaybeHandle<Object> Call(Handle<Object> a);
   MaybeHandle<Object> Call(Handle<Object> a, Handle<Object> b);
   MaybeHandle<Object> Call(Handle<Object> a, Handle<Object> b,
                            Handle<Object> c);
   MaybeHandle<Object> Call(Handle<Object> a, Handle<Object> b, Handle<Object> c,
                            Handle<Object> d);
 
+  void CheckThrows(Handle<Object> a);
   void CheckThrows(Handle<Object> a, Handle<Object> b);
   v8::Local<v8::Message> CheckThrowsReturnMessage(Handle<Object> a,
                                                   Handle<Object> b);
   void CheckCall(Handle<Object> expected, Handle<Object> a, Handle<Object> b,
                  Handle<Object> c, Handle<Object> d);
 
   void CheckCall(Handle<Object> expected, Handle<Object> a, Handle<Object> b,
                  Handle<Object> c) {
     return CheckCall(expected, a, b, c, undefined());
   }
@@ skipping 75 matching lines @@
 
   // Compile the given machine graph instead of the source of the function
   // and replace the JSFunction's code with the result.
   Handle<JSFunction> CompileGraph(Graph* graph);
 };
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_CCTEST_COMPILER_FUNCTION_TESTER_H_