MIPS: Fix test-cpu-profiler/SampleWhenFrameIsNotSetup flakiness on MIPS simulator.

BUG=v8:2628

TEST=cctest/test-cpu-profiler/SampleWhenFrameIsNotSetup
R=jkummerow@chromium.org, yurys@chromium.org

Review URL: https://codereview.chromium.org/17265004

Patch from Dusan Milosavljevic <Dusan.Milosavljevic@rt-rk.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15213 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/mips/simulator-mips.h

@@ -316,8 +316,6 @@ class Simulator {
     if (instr->InstructionBits() == nopInstr) {
       // Short-cut generic nop instructions. They are always valid and they
       // never change the simulator state.
-      set_register(pc, reinterpret_cast<int32_t>(instr) +
-                       Instruction::kInstrSize);
       return;
     }
 

test/cctest/cctest.status

@@ -75,9 +75,6 @@ test-serialize/DeserializeFromSecondSerialization: SKIP
 ##############################################################################
 [ $arch == mipsel ]
 
-# BUG(2628): The test sometimes fails on MIPS simulator.
-test-cpu-profiler/SampleWhenFrameIsNotSetup: PASS || FAIL
-
 # BUG(2657): Test sometimes times out on MIPS simulator.
 test-thread-termination/TerminateMultipleV8ThreadsDefaultIsolate: PASS || TIMEOUT