Rename metrics.proto to wv_metrics.proto.

Merge from http://go/wvgerrit/105767

To avoid conflict with metrics.proto in
frameworks/av/drm/libmediadrm/proto.
This is in preparation of moving metrics_dump tool
to build under Android.

bug: 161783052
Test: unit test
Test: Play Movies & Tv and Netflix streaming
Change-Id: I2406b66db4d61cca7c6260ea8847a555d96c8d42

libwvdrmengine/mediadrm/src_hidl/WVDrmPlugin.cpp

@@ -22,9 +22,9 @@
 #include "hidl_metrics_adapter.h"
 #include "mapErrors-inl.h"
 #include "media/stagefright/MediaErrors.h"
-#include "metrics.pb.h"
 #include "openssl/sha.h"
 #include "wv_cdm_constants.h"
+#include "wv_metrics.pb.h"
 
 namespace {
 

libwvdrmengine/mediadrm/src_hidl/hidl_metrics_adapter.cpp

@@ -7,7 +7,7 @@
 #include "hidl_metrics_adapter.h"
 
 #include <android/hardware/drm/1.1/types.h>
-#include "metrics.pb.h"
+#include "wv_metrics.pb.h"
 
 using android::hardware::hidl_vec;
 using android::hardware::drm::V1_1::DrmMetricGroup;