Use -Werror in system/core

* Move -Wall -Werror from cppflags to cflags.
* Fix/suppress warning on unused variables.

Bug: 66996870
Test: build with WITH_TIDY=1
Change-Id: I1e05e96a1d0bcb2ccef1ce456504b3af57167cc5

1 files changed, 8 insertions, 11 deletions

diff --git a/libutils/include/utils/StopWatch.h b/libutils/include/utils/StopWatch.h
index 693dd3ccf..76d78d0f4 100644
--- a/libutils/include/utils/StopWatch.h
+++ b/libutils/include/utils/StopWatch.h
@@ -29,21 +29,18 @@ namespace android {
 class StopWatch
 {
 public:
-        StopWatch(  const char *name,
-                    int clock = SYSTEM_TIME_MONOTONIC,
-                    uint32_t flags = 0);
-        ~StopWatch();
-        
-        const char* name() const;
-        nsecs_t     lap();
-        nsecs_t     elapsedTime() const;
+  StopWatch(const char* name, int clock = SYSTEM_TIME_MONOTONIC);
+  ~StopWatch();
+
+  const char* name() const;
+  nsecs_t lap();
+  nsecs_t elapsedTime() const;
+
+  void reset();
 
-        void        reset();
-        
 private:
     const char*     mName;
     int             mClock;
-    uint32_t        mFlags;
     
     struct lap_t {
         nsecs_t     soFar;