[DevTools] Add canProfilePower command and plumb power handlers to RenderViewDevToolsAgentHost

content/browser/devtools/devtools_power_handler.cc

Index: content/browser/devtools/devtools_power_handler.cc
diff --git a/content/browser/devtools/devtools_power_handler.cc b/content/browser/devtools/devtools_power_handler.cc
index 9bf68f45a7311267ed162bd5165be40251269e93..fc11e4840b0ff64fd739ca5386a2607b9f26790e 100644
--- a/content/browser/devtools/devtools_power_handler.cc
+++ b/content/browser/devtools/devtools_power_handler.cc
@@ -23,6 +23,9 @@ DevToolsPowerHandler::DevToolsPowerHandler() {
   RegisterCommandHandler(devtools::Power::end::kName,
                          base::Bind(&DevToolsPowerHandler::OnEnd,
                                     base::Unretained(this)));
+  RegisterCommandHandler(devtools::Power::canProfilePower::kName,
+                         base::Bind(&DevToolsPowerHandler::OnCanProfilePower,
+                                    base::Unretained(this)));
 }
 
 DevToolsPowerHandler::~DevToolsPowerHandler() {
@@ -69,4 +72,14 @@ DevToolsPowerHandler::OnEnd(scoped_refptr<DevToolsProtocol::Command> command) {
   return command->InternalErrorResponse("Power profiler service unavailable");
 }
 
+scoped_refptr<DevToolsProtocol::Response>
+DevToolsPowerHandler::OnCanProfilePower(
+    scoped_refptr<DevToolsProtocol::Command> command) {
+  base::DictionaryValue* result = new base::DictionaryValue();
+  result->SetBoolean(devtools::kResult,
+                     PowerProfilerService::GetInstance()->IsAvailable());
+
+  return command->SuccessResponse(result);
+}
+
 }  // namespace content