Use String8/16 c_str [graphics]

Bug: 295394788
Test: make checkbuild
Change-Id: I69aa06b109c2f40ecf40441cbbb0dfa3e1aa99a1
diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index d787a55..4a201ee 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -5926,7 +5926,7 @@
 
     const auto name = String8(args[1]);
     mCurrentState.traverseInZOrder([&](Layer* layer) {
-        if (layer->getName() == name.string()) {
+        if (layer->getName() == name.c_str()) {
             layer->dumpFrameStats(result);
         }
     });
@@ -5937,7 +5937,7 @@
     const auto name = clearAll ? String8() : String8(args[1]);
 
     mCurrentState.traverse([&](Layer* layer) {
-        if (clearAll || layer->getName() == name.string()) {
+        if (clearAll || layer->getName() == name.c_str()) {
             layer->clearFrameStats();
         }
     });