DevTools: show progress when retrieving recorded trace events

Source/devtools/protocol.json

Index: Source/devtools/protocol.json
diff --git a/Source/devtools/protocol.json b/Source/devtools/protocol.json
index be75e96c83b0001afbe507a950ffad5e256d16f8..f0263b3a7c8f3d23f13a46c595c599d5d5ee5eaa 100644
--- a/Source/devtools/protocol.json
+++ b/Source/devtools/protocol.json
@@ -4360,7 +4360,8 @@
             {
                 "name": "bufferUsage",
                 "parameters": [
-                    { "name": "value", "type": "number", "description": "A number in range [0..1] that indicates the used size of event buffer as a fraction of its total size." }
+                    { "name": "value", "type": "number", "description": "A number in range [0..1] that indicates the used size of event buffer as a fraction of its total size." },
+                    { "name": "eventCount", "type": "number", "description": "A number that indicates the total used size of event buffer as a number of events." }

[alph, 2014/11/12 15:41:11]

the description is a bit confusing. Is it a number of events or the used buffer
size?

[yurys, 2014/11/17 12:59:37]

Done.

                 ],
                 "handlers": ["browser"]
             }