DevTools: switch devtools platform events to new timeline category

This switches trace events emitted from PlatformInstrumentation to use
trace event category consistent with the trace-based timeline.
Drive-by: fix category filter in TraceEventDispatcher.

BUG=361045

Review URL: https://codereview.chromium.org/337143002

git-svn-id: svn://svn.chromium.org/blink/trunk@176413 bbb929c8-8fbe-4397-9dbb-9b2b20218538

third_party/WebKit/Source/core/inspector/TraceEventDispatcher.cpp

@@ -100,7 +100,7 @@ void TraceEventDispatcher::processBackgroundEvents()
 
 void TraceEventDispatcher::innerAddListener(const char* name, char phase, TraceEventTargetBase* instance, TraceEventHandlerMethod method, InspectorClient* client)
 {
-    static const char CategoryFilter[] = "devtools,disabled-by-default.devtools.timeline,disabled-by-default.devtools.timeline.frame";
+    static const char CategoryFilter[] = "-*," TRACE_DISABLED_BY_DEFAULT("devtools.timeline") "," TRACE_DISABLED_BY_DEFAULT("devtools.timeline.frame");
 
     ASSERT(isMainThread());
     MutexLocker locker(m_mutex);

third_party/WebKit/Source/platform/PlatformInstrumentation.cpp

@@ -34,7 +34,7 @@
 
 namespace WebCore {
 
-const char PlatformInstrumentation::CategoryName[] = "devtools";
+const char PlatformInstrumentation::CategoryName[] = TRACE_DISABLED_BY_DEFAULT("devtools.timeline");
 
 const char PlatformInstrumentation::ImageDecodeEvent[] = "Decode Image";
 const char PlatformInstrumentation::ImageResizeEvent[] = "Resize Image";