AudioFlinger: Update namespace for Statistics

Test: Build and basic sanity
Bug: 80502521
Change-Id: I4f9180d1eb1eb53b75bf6fdb9f98cdcb03b6e9f2
diff --git a/services/audioflinger/FastMixerDumpState.cpp b/services/audioflinger/FastMixerDumpState.cpp
index ffdc117..e26dca1 100644
--- a/services/audioflinger/FastMixerDumpState.cpp
+++ b/services/audioflinger/FastMixerDumpState.cpp
@@ -92,9 +92,9 @@
     }
     // statistics for monotonic (wall clock) time, thread raw CPU load in time, CPU clock frequency,
     // and adjusted CPU load in MHz normalized for CPU clock frequency
-    Statistics<double> wall, loadNs;
+    audio_utils::Statistics<double> wall, loadNs;
 #ifdef CPU_FREQUENCY_STATISTICS
-    Statistics<double> kHz, loadMHz;
+    audio_utils::Statistics<double> kHz, loadMHz;
     uint32_t previousCpukHz = 0;
 #endif
     // Assuming a normal distribution for cycle times, three standard deviations on either side of
@@ -152,7 +152,7 @@
         qsort(tail, n, sizeof(uint32_t), compare_uint32_t);
         // assume same number of tail samples on each side, left and right
         uint32_t count = n / kTailDenominator;
-        Statistics<double> left, right;
+        audio_utils::Statistics<double> left, right;
         for (uint32_t i = 0; i < count; ++i) {
             left.add(tail[i]);
             right.add(tail[n - (i + 1)]);
diff --git a/services/audioflinger/Threads.cpp b/services/audioflinger/Threads.cpp
index 6c7179e..b1841b0 100644
--- a/services/audioflinger/Threads.cpp
+++ b/services/audioflinger/Threads.cpp
@@ -335,9 +335,9 @@
 #ifdef DEBUG_CPU_USAGE
 private:
     ThreadCpuUsage mCpuUsage;           // instantaneous thread CPU usage in wall clock ns
-    Statistics<double> mWcStats;        // statistics on thread CPU usage in wall clock ns
+    audio_utils::Statistics<double> mWcStats; // statistics on thread CPU usage in wall clock ns
 
-    Statistics<double> mHzStats;        // statistics on thread CPU usage in cycles
+    audio_utils::Statistics<double> mHzStats; // statistics on thread CPU usage in cycles
 
     int mCpuNum;                        // thread's current CPU number
     int mCpukHz;                        // frequency of thread's current CPU in kHz