Move some Runtime:: functions and remove runtime.h as include when unnecessary.

src/runtime/runtime-utils.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_RUNTIME_UTILS_H_
-#define V8_RUNTIME_UTILS_H_
+#ifndef V8_RUNTIME_RUNTIME_UTILS_H_
+#define V8_RUNTIME_RUNTIME_UTILS_H_
 
 
 namespace v8 {
 namespace internal {
 
 #define RUNTIME_ASSERT(value) \
   if (!(value)) return isolate->ThrowIllegalOperation();
 
 #define RUNTIME_ASSERT_HANDLIFIED(value, T) \
   if (!(value)) {                           \
@@ skipping 117 matching lines @@
          (reinterpret_cast<ObjectPair>(y) << 32);
 #elif defined(V8_TARGET_BIG_ENDIAN)
   return reinterpret_cast<uint32_t>(y) |
          (reinterpret_cast<ObjectPair>(x) << 32);
 #else
 #error Unknown endianness
 #endif
 }
 #endif
 
-class JavaScriptFrameIterator;
-
-int FindIndexedNonNativeFrame(JavaScriptFrameIterator* it, int index);
 }
 }  // namespace v8::internal
 
-#endif  // V8_RUNTIME_UTILS_H_
+#endif  // V8_RUNTIME_RUNTIME_UTILS_H_