Revert "Move proto definitions to external/perfetto"

This reverts commit bec51fdc3c8a42cbcb833d7d14800fbb0a14a7f3.

Reason for revert: 298512106

Change-Id: Icb9d6d5a23176a809c3b71bcaa3928b03dfb0622
diff --git a/services/surfaceflinger/Tracing/tools/main.cpp b/services/surfaceflinger/Tracing/tools/main.cpp
index 0ff8f98..5ca87e4 100644
--- a/services/surfaceflinger/Tracing/tools/main.cpp
+++ b/services/surfaceflinger/Tracing/tools/main.cpp
@@ -41,7 +41,7 @@
         return -1;
     }
 
-    perfetto::protos::TransactionTraceFile transactionTraceFile;
+    proto::TransactionTraceFile transactionTraceFile;
     if (!transactionTraceFile.ParseFromIstream(&input)) {
         std::cout << "Error: Failed to parse " << transactionTracePath;
         return -1;