[instrumentation] Introduce JSON5 config files for probe generator.

third_party/WebKit/Source/build/scripts/templates/InstrumentingProbesInl.h.tmpl

Index: third_party/WebKit/Source/build/scripts/templates/InstrumentingProbesInl.h.tmpl
diff --git a/third_party/WebKit/Source/platform/probe/templates/InstrumentingProbesInl.h.tmpl b/third_party/WebKit/Source/build/scripts/templates/InstrumentingProbesInl.h.tmpl
similarity index 84%
rename from third_party/WebKit/Source/platform/probe/templates/InstrumentingProbesInl.h.tmpl
rename to third_party/WebKit/Source/build/scripts/templates/InstrumentingProbesInl.h.tmpl
index db28b1dd4158a0bdd240dd5475476d05466c0a81..d525812339731788e616f3e852966a20e11dde47 100644
--- a/third_party/WebKit/Source/platform/probe/templates/InstrumentingProbesInl.h.tmpl
+++ b/third_party/WebKit/Source/build/scripts/templates/InstrumentingProbesInl.h.tmpl
@@ -12,9 +12,7 @@
 {{include}}
 {% endfor %}
 
-{% for define in file.defines %}
-{{define}}
-{% endfor %}
+{% set export_symbol = config["settings"]["export_symbol"] %}
 
 namespace blink {
 
@@ -37,7 +35,7 @@ namespace probe {
 {% if probe.is_scoped %}
 
 
-class PROBE_EXPORT {{probe.name}} : public ProbeBase {
+class {{export_symbol}} {{probe.name}} : public ProbeBase {
   STACK_ALLOCATED()
  public:
   explicit {{probe.name}}({{ params_decl(probe) }});
@@ -48,7 +46,7 @@ class PROBE_EXPORT {{probe.name}} : public ProbeBase {
 };
 {%- else %}
 
-PROBE_EXPORT {{probe.return_type}} {{probe.name}}({{ params_decl(probe) }});
+{{export_symbol}} {{probe.return_type}} {{probe.name}}({{ params_decl(probe) }});
 
 {%- endif %}
 {%- endfor %}