Add trace event Pepper API

ppapi/shared_impl/ppb_instance_shared.h

Index: ppapi/shared_impl/ppb_instance_shared.h
diff --git a/ppapi/shared_impl/ppb_instance_shared.h b/ppapi/shared_impl/ppb_instance_shared.h
index a1845d322314f6a8cd2a45c4b9a269c5276124c7..ad0726c66e641e9f8de7bfc15bed268febfed122 100644
--- a/ppapi/shared_impl/ppb_instance_shared.h
+++ b/ppapi/shared_impl/ppb_instance_shared.h
@@ -30,6 +30,22 @@ class PPAPI_SHARED_EXPORT PPB_Instance_Shared
   // PP_OK if the given classes are all valid, PP_ERROR_NOTSUPPORTED if not.
   int32_t ValidateRequestInputEvents(bool is_filtering, uint32_t event_classes);
 
+  void* GetCategoryEnabled(PP_Instance instance,
+                           const char* category_name) OVERRIDE;
+  int32_t AddTraceEvent(PP_Instance instance,
+                        int8_t phase,
+                        const void* category_enabled,
+                        const char* name,
+                        uint64_t id,
+                        uint32_t num_args,
+                        const char* arg_names[],
+                        const uint8_t arg_types[],
+                        const uint64_t arg_values[],
+                        int32_t threshold_begin_id,
+                        int64_t threshold,
+                        uint8_t flags) OVERRIDE;
+  void SetThreadName(PP_Instance instance, const char* thread_name) OVERRIDE;
+
   bool ValidateSetCursorParams(PP_MouseCursor_Type type,
                                PP_Resource image,
                                const PP_Point* hot_spot);