[test] Fix inlining test for CpuProfiler.

When running this test locally, the OptimizeFunctionOnNextCall
call fails, because the line above has no semicolon, and automatic
insertion doesn't help, probably because of the % sign. The test still
runs, but the first call after level1() fails, meaning the inlining
does not happen.

Change-Id: Icd2d08e676ea3cade63d4e12277748a447e410fc
Reviewed-on: https://chromium-review.googlesource.com/1030210Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#52808}

test/cctest/test-cpu-profiler.cc

@@ -1568,7 +1568,7 @@ TEST(JsNativeJsRuntimeJsSampleMultiple) {
 static const char* inlining_test_source =
     "%NeverOptimizeFunction(action);\n"
     "%NeverOptimizeFunction(start);\n"
-    "level1()\n"
+    "level1();\n"
     "%OptimizeFunctionOnNextCall(level1);\n"
     "%OptimizeFunctionOnNextCall(level2);\n"
     "%OptimizeFunctionOnNextCall(level3);\n"