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

src/arm/jump-target-arm.cc

 // Copyright 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 "codegen-inl.h"
 #include "jump-target-inl.h"
 #include "register-allocator-inl.h"
 
-namespace v8 { namespace internal {
+namespace v8 {
+namespace internal {
 
 // -------------------------------------------------------------------------
 // JumpTarget implementation.
 
 #define __ ACCESS_MASM(cgen()->masm())
 
 void JumpTarget::DoJump() {
   ASSERT(cgen()->has_valid_frame());
   // Live non-frame registers are not allowed at unconditional jumps
   // because we have no way of invalidating the corresponding results
@@ skipping 271 matching lines @@
     cgen()->frame()->MergeTo(entry_frame_);
   }
 
   __ bind(&entry_label_);
 }
 
 #undef __
 
 
 } }  // namespace v8::internal