tracing: restructure to the components/tracing folder

components/tracing/common/tracing_messages.cc

Index: components/tracing/common/tracing_messages.cc
diff --git a/components/tracing/tracing_messages.cc b/components/tracing/common/tracing_messages.cc
similarity index 67%
rename from components/tracing/tracing_messages.cc
rename to components/tracing/common/tracing_messages.cc
index 7c6b7897099118384ad4e7e6c08600a1bb6b2374..e05142c4066a8cae2d7caef491f84b5564798385 100644
--- a/components/tracing/tracing_messages.cc
+++ b/components/tracing/common/tracing_messages.cc
@@ -4,37 +4,36 @@
 
 // Get basic type definitions.
 #define IPC_MESSAGE_IMPL
-#include "components/tracing/tracing_messages.h"
+#include "components/tracing/common/tracing_messages.h"
 
 // Generate constructors.
 #include "ipc/struct_constructor_macros.h"
-#include "components/tracing/tracing_messages.h"
+#include "components/tracing/common/tracing_messages.h"
 
 // Generate destructors.
 #include "ipc/struct_destructor_macros.h"
-#include "components/tracing/tracing_messages.h"
+#include "components/tracing/common/tracing_messages.h"
 
 // Generate param traits size methods.
 #include "ipc/param_traits_size_macros.h"
 namespace IPC {
-#include "components/tracing/tracing_messages.h"
+#include "components/tracing/common/tracing_messages.h"
 }
 
 // Generate param traits write methods.
 #include "ipc/param_traits_write_macros.h"
 namespace IPC {
-#include "components/tracing/tracing_messages.h"
+#include "components/tracing/common/tracing_messages.h"
 }  // namespace IPC
 
 // Generate param traits read methods.
 #include "ipc/param_traits_read_macros.h"
 namespace IPC {
-#include "components/tracing/tracing_messages.h"
+#include "components/tracing/common/tracing_messages.h"
 }  // namespace IPC
 
 // Generate param traits log methods.
 #include "ipc/param_traits_log_macros.h"
 namespace IPC {
-#include "components/tracing/tracing_messages.h"
+#include "components/tracing/common/tracing_messages.h"
 }  // namespace IPC
-