Rename libtraced_shared to libperfetto

Makes more sense for clients in the Android tree to depend on it.

Bug: 116547201
Change-Id: I4e4061f9e32a579e061eb4e5d303a877527925b0
diff --git a/BUILD.gn b/BUILD.gn
index 089fb61..011e158 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -163,12 +163,12 @@
   }
 
   if (monolithic_binaries) {
-    libtraced_shared_target_type = "source_set"
+    libperfetto_target_type = "source_set"
   } else {
-    libtraced_shared_target_type = "shared_library"
+    libperfetto_target_type = "shared_library"
   }
 
-  target(libtraced_shared_target_type, "libtraced_shared") {
+  target(libperfetto_target_type, "libperfetto") {
     deps = [
       "gn:default_deps",
       "src/traced/probes",
@@ -181,7 +181,7 @@
   # log buffers.
   executable("traced") {
     deps = [
-      ":libtraced_shared",
+      ":libperfetto",
       "gn:default_deps",
       "include/perfetto/traced",
     ]
@@ -194,7 +194,7 @@
   # Registers as a Producer on the traced daemon.
   executable("traced_probes") {
     deps = [
-      ":libtraced_shared",
+      ":libperfetto",
       "gn:default_deps",
       "include/perfetto/traced",
     ]