Fix presubmit - remove stray whitespace on empty lines.

src/mips/builtins-mips.cc

 // Copyright 2011 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 1274 matching lines @@
     __ addu(a3, sp, at);
     __ sw(a2, MemOperand(a3, -kPointerSize));
 
     __ Branch(&shift_arguments);
   }
 
   // 3b. Check for function proxy.
   __ bind(&slow);
   __ li(t0, Operand(1, RelocInfo::NONE));  // Indicate function proxy.
   __ Branch(&shift_arguments, eq, a2, Operand(JS_FUNCTION_PROXY_TYPE));
-  
+
   __ bind(&non_function);
   __ li(t0, Operand(2, RelocInfo::NONE));  // Indicate non-function.
 
   // 3c. Patch the first argument when calling a non-function.  The
   //     CALL_NON_FUNCTION builtin expects the non-function callee as
   //     receiver, so overwrite the first argument which will ultimately
   //     become the receiver.
   // a0: actual number of arguments
   // a1: function
   // t0: call type (0: JS function, 1: function proxy, 2: non-function)
@@ skipping 201 matching lines @@
     __ lw(a1, MemOperand(fp, kLimitOffset));
     __ Branch(&loop, ne, a0, Operand(a1));
 
     // Invoke the function.
     Label call_proxy;
     ParameterCount actual(a0);
     __ sra(a0, a0, kSmiTagSize);
     __ lw(a1, MemOperand(fp, kFunctionOffset));
     __ GetObjectType(a1, a2, a2);
     __ Branch(&call_proxy, ne, a2, Operand(JS_FUNCTION_TYPE));
-  
+
     __ InvokeFunction(a1, actual, CALL_FUNCTION,
                       NullCallWrapper(), CALL_AS_METHOD);
 
     frame_scope.GenerateLeaveFrame();
     __ Ret(USE_DELAY_SLOT);
     __ Addu(sp, sp, Operand(3 * kPointerSize));  // In delay slot.
 
     // Invoke the function proxy.
     __ bind(&call_proxy);
     __ push(a1);  // Add function proxy as last argument.
@@ skipping 149 matching lines @@
   __ bind(&dont_adapt_arguments);
   __ Jump(a3);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_MIPS