Bulk update of Google copyright headers in source files.

src/arm64/constants-arm64.h

 // Copyright 2013 the V8 project authors. All rights reserved.
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-// met:
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-//       disclaimer in the documentation and/or other materials provided
-//       with the distribution.
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-//       contributors may be used to endorse or promote products derived
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+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
 
 #ifndef V8_ARM64_CONSTANTS_ARM64_H_
 #define V8_ARM64_CONSTANTS_ARM64_H_
 
 
 // Assert that this is an LP64 system.
 STATIC_ASSERT(sizeof(int) == sizeof(int32_t));     // NOLINT(runtime/sizeof)
 STATIC_ASSERT(sizeof(long) == sizeof(int64_t));    // NOLINT(runtime/int)
 STATIC_ASSERT(sizeof(void *) == sizeof(int64_t));  // NOLINT(runtime/sizeof)
 STATIC_ASSERT(sizeof(1) == sizeof(int32_t));       // NOLINT(runtime/sizeof)
@@ skipping 1225 matching lines @@
 };
 
 enum UnallocatedOp {
   UnallocatedFixed = 0x00000000,
   UnallocatedFMask = 0x00000000
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_ARM64_CONSTANTS_ARM64_H_