A64: Synchronize with r16993.

include/v8-defaults.h

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
 //       with the distribution.
 //     * Neither the name of Google Inc. nor the names of its
 //       contributors may be used to endorse or promote products derived
 //       from this software without specific prior written permission.
 //
 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
+#ifndef V8_V8_DEFAULTS_H_
+#define V8_V8_DEFAULTS_H_
+
 #include "v8.h"
 
-#if V8_TARGET_ARCH_A64
+/**
+ * Default configuration support for the V8 JavaScript engine.
+ */
+namespace v8 {
 
-#include "assembler.h"
-#include "assembler-a64.h"
-#include "assembler-a64-inl.h"
-#include "frames.h"
-
-namespace v8 {
-namespace internal {
+/**
+ * Configures the constraints with reasonable default values based on the
+ * capabilities of the current device the VM is running on.
+ */
+bool V8_EXPORT ConfigureResourceConstraintsForCurrentPlatform(
+    ResourceConstraints* constraints);
 
 
-Register JavaScriptFrame::fp_register() { return v8::internal::fp; }
-Register JavaScriptFrame::context_register() { return cp; }
+/**
+ * Convience function which performs SetResourceConstraints with the settings
+ * returned by ConfigureResourceConstraintsForCurrentPlatform.
+ */
+bool V8_EXPORT SetDefaultResourceConstraintsForCurrentPlatform();
 
+}  // namespace v8
 
-Register StubFailureTrampolineFrame::fp_register() { return v8::internal::fp; }
-Register StubFailureTrampolineFrame::context_register() { return cp; }
-
-
-} }  // namespace v8::internal
-
-#endif  // V8_TARGET_ARCH_A64
+#endif  // V8_V8_DEFAULTS_H_