Clean up KernelCpuThreadReader

This includes (as well as nits by IntelliJ):
- Removing getCurrentProcessCpuUsage, as it was only used in tests
- Updating class documentation
- Adding @Presubmit annotations to tests
- Reformat using google-java-format

Test: atest KernelCpuThreadReaderTest

Change-Id: I710773043b9e9ef40545c20667fe2f79e9915e43

1 files changed, 1 insertions, 1 deletions

diff --git a/apct-tests/perftests/core/src/android/os/KernelCpuThreadReaderPerfTest.java b/apct-tests/perftests/core/src/android/os/KernelCpuThreadReaderPerfTest.java
index 0c30302d63a3..1f261882b2d3 100644
--- a/apct-tests/perftests/core/src/android/os/KernelCpuThreadReaderPerfTest.java
+++ b/apct-tests/perftests/core/src/android/os/KernelCpuThreadReaderPerfTest.java
@@ -47,7 +47,7 @@ public class KernelCpuThreadReaderPerfTest {
         final BenchmarkState state = mPerfStatusReporter.getBenchmarkState();
         assertNotNull(mKernelCpuThreadReader);
         while (state.keepRunning()) {
-            this.mKernelCpuThreadReader.getCurrentProcessCpuUsage();
+            this.mKernelCpuThreadReader.getProcessCpuUsage();
         }
     }
 }