metrics: fix clang syntax checking error.

This fixes the two errors in the clang syntax.

BUG=chromium:240325
TEST=FEATURES="test" emerge-lumpy metrics

Change-Id: I57ab09fbd3dba2b394c606a3b2ba1ad799607939
Reviewed-on: https://gerrit.chromium.org/gerrit/50999
Reviewed-by: Darin Petkov <petkov@chromium.org>
Commit-Queue: Yunlian Jiang <yunlian@chromium.org>
Tested-by: Yunlian Jiang <yunlian@chromium.org>
diff --git a/metrics/counter_mock.h b/metrics/counter_mock.h
index cf2a486..267aaca 100644
--- a/metrics/counter_mock.h
+++ b/metrics/counter_mock.h
@@ -34,9 +34,7 @@
 
 class FrequencyCounterMock : public FrequencyCounter {
  public:
-  MOCK_METHOD4(Init, void(const char* filename,
-                          TaggedCounterInterface::Reporter reporter,
-                          void* reporter_handle,
+  MOCK_METHOD2(Init, void(TaggedCounterInterface* tagged_counter,
                           time_t cycle_duration));
   MOCK_METHOD1(Update, void(int32 count));
   MOCK_METHOD0(FlushFinishedCycles, void());