PaintMeasureTextTest: only pause/resume not_cached benchmarks

Pausing and resuming the benchmark timer isn't needed unless we plan to
flush the text layout cache.  The cached benchmark runs are so fast on
high-end devices, the overhead of these extra calls can be significant
compared to the actual code being measured.

Test: run PaintMeasureTextTest on sailfish

Bug: 69634871
Change-Id: If8246154e50451d82ac96e026036aa4a42eaed8d
Signed-off-by: Greg Hackmann <ghackmann@google.com>
(cherry picked from commit ceb5dd0faf)

apct-tests/perftests/core/src/android/graphics/perftests/PaintMeasureTextTest.java

@@ -80,11 +80,11 @@ public class PaintMeasureTextTest {
         }
 
         while (state.keepRunning()) {
-            state.pauseTiming();
             if (mCacheMode == DONT_USE_CACHE) {
+                state.pauseTiming();
                 Canvas.freeTextLayoutCaches();
+                state.resumeTiming();
             }
-            state.resumeTiming();
 
             paint.measureText(mText);
         }