Split nested namespaces declaration in two lines in accordance with C++ Style Guide.

src/arm/stub-cache-arm.cc

 // Copyright 2006-2008 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
@@ skipping 13 matching lines @@
 // 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.
 
 #include "v8.h"
 
 #include "ic-inl.h"
 #include "codegen-inl.h"
 #include "stub-cache.h"
 
-namespace v8 { namespace internal {
+namespace v8 {
+namespace internal {
 
 #define __ ACCESS_MASM(masm)
 
 
 static void ProbeTable(MacroAssembler* masm,
                        Code::Flags flags,
                        StubCache::Table table,
                        Register name,
                        Register offset) {
   ExternalReference key_offset(SCTableReference::keyReference(table));
@@ skipping 1070 matching lines @@
   __ Jump(ic, RelocInfo::CODE_TARGET);
 
   // Return the generated code.
   return GetCode(transition == NULL ? FIELD : MAP_TRANSITION, name);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal