[tracing] Allow enabling heap profiling from chrome://flags

base/base_switches.h

Index: base/base_switches.h
diff --git a/base/base_switches.h b/base/base_switches.h
index 04b0773057249cf961912bc1f384f0457bfe5150..8ba05a68e44d057f89c313cc1015c0d3ba1788f5 100644
--- a/base/base_switches.h
+++ b/base/base_switches.h
@@ -15,6 +15,7 @@ extern const char kDisableBreakpad[];
 extern const char kDisableLowEndDeviceMode[];
 extern const char kEnableCrashReporter[];
 extern const char kEnableHeapProfiling[];
+extern const char kEnableHeapProfilingModePseudo[];
 extern const char kEnableHeapProfilingModeNative[];
 extern const char kEnableHeapProfilingTaskProfiler[];

[Wez, 2017/04/28 17:17:12]

Is TaskProfiler not a heap-profiling "mode"?  i.e. should it be
kEnableHeapProfilingModeTaskProfiler?

Or, to shorten the mode names, perhaps call these kHeapProfilingModeFoo since
they are the names of the modes, versus the enable flag itself?

[DmitrySkiba, 2017/04/28 19:39:13]

Yeah, I can see your logic here, but I don't want to bloat this CL with
renaming.

[Wez, 2017/04/29 01:15:10]

Understood; perhaps we can rename in a separate CL. :)

 extern const char kEnableLowEndDeviceMode[];