Revert of [DevTools] Migrate DevToolsTracingHandler to generated handler.

content/browser/devtools/protocol/tracing_handler.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/browser/devtools/protocol/tracing_handler.h"
 
-#include <cmath>
-
-#include "base/bind.h"
-#include "base/debug/trace_event_impl.h"
-#include "base/strings/string_split.h"
-#include "base/strings/stringprintf.h"
-#include "base/time/time.h"
-#include "base/timer/timer.h"
-
 namespace content {
 namespace devtools {
 namespace tracing {
 
 typedef DevToolsProtocolClient::Response Response;
 
-namespace {
-
-const char kRecordUntilFull[]   = "record-until-full";
-const char kRecordContinuously[] = "record-continuously";
-const char kRecordAsMuchAsPossible[] = "record-as-much-as-possible";
-const char kEnableSampling[] = "enable-sampling";
-const double kMinimumReportingInterval = 250.0;
-
-class DevToolsTraceSinkProxy : public TracingController::TraceDataSink {
- public:
-  explicit DevToolsTraceSinkProxy(base::WeakPtr<TracingHandler> handler)
-      : tracing_handler_(handler) {}
-
-  virtual void AddTraceChunk(const std::string& chunk) override {
-    if (TracingHandler* h = tracing_handler_.get())
-      h->OnTraceDataCollected(chunk);
-  }
-  virtual void Close() override {
-    if (TracingHandler* h = tracing_handler_.get())
-      h->OnTraceComplete();
-  }
-
- private:
-  virtual ~DevToolsTraceSinkProxy() {}
-
-  base::WeakPtr<TracingHandler> tracing_handler_;
-};
-
-}  // namespace
-
-TracingHandler::TracingHandler(TracingHandler::Target target)
-    : target_(target),
-      is_recording_(false),
-      weak_factory_(this) {
+TracingHandler::TracingHandler() {
 }
 
 TracingHandler::~TracingHandler() {
 }
 
 void TracingHandler::SetClient(scoped_ptr<Client> client) {
   client_.swap(client);
 }
 
-void TracingHandler::Detached() {
-  if (is_recording_)
-    DisableRecording(true);
-}
-
-void TracingHandler::OnTraceDataCollected(const std::string& trace_fragment) {
-  // Hand-craft protocol notification message so we can substitute JSON
-  // that we already got as string as a bare object, not a quoted string.
-  std::string message(
-      "{ \"method\": \"Tracing.dataCollected\", \"params\": { \"value\": [");
-  const size_t messageSuffixSize = 10;
-  message.reserve(message.size() + trace_fragment.size() + messageSuffixSize);
-  message += trace_fragment;
-  message += "] } }";
-  client_->SendRawMessage(message);
-}
-
-void TracingHandler::OnTraceComplete() {
-  TracingCompleteParams params;
-  client_->TracingComplete(params);
+scoped_refptr<DevToolsProtocol::Response> TracingHandler::Start(
+    const std::string& categories,
+    const std::string& options,
+    const double* buffer_usage_reporting_interval,
+    scoped_refptr<DevToolsProtocol::Command> command) {
+  return NULL;
 }
 
 scoped_refptr<DevToolsProtocol::Response> TracingHandler::Start(
     const std::string* categories,
-    const std::string* options_str,
+    const std::string* options,
     const double* buffer_usage_reporting_interval,
     scoped_refptr<DevToolsProtocol::Command> command) {
-  if (is_recording_)
-    return command->InternalErrorResponse("Tracing is already started");
-  is_recording_ = true;
-
-  base::debug::TraceOptions options = TraceOptionsFromString(options_str);
-  base::debug::CategoryFilter filter(categories ? *categories : std::string());
-  if (buffer_usage_reporting_interval)
-    SetupTimer(*buffer_usage_reporting_interval);
-
-  // If inspected target is a render process Tracing.start will be handled by
-  // tracing agent in the renderer.
-  if (target_ == Renderer) {
-    TracingController::GetInstance()->EnableRecording(
-        filter,
-        options,
-        TracingController::EnableRecordingDoneCallback());
-    return nullptr;
-  }
-
-  TracingController::GetInstance()->EnableRecording(
-      filter,
-      options,
-      base::Bind(&TracingHandler::OnRecordingEnabled,
-                 weak_factory_.GetWeakPtr(),
-                 command));
-  return command->AsyncResponsePromise();
+  return NULL;
 }
 
 scoped_refptr<DevToolsProtocol::Response> TracingHandler::End(
     scoped_refptr<DevToolsProtocol::Command> command) {
-  if (!is_recording_)
-    return command->InternalErrorResponse("Tracing is not started");
-  DisableRecording(false);
-  // If inspected target is a render process Tracing.end will be handled by
-  // tracing agent in the renderer.
-  if (target_ == Renderer)
-    return nullptr;
-  return command->SuccessResponse(nullptr);
+  return NULL;
 }
 
 scoped_refptr<DevToolsProtocol::Response> TracingHandler::GetCategories(
     scoped_refptr<DevToolsProtocol::Command> command) {
-  TracingController::GetInstance()->GetCategories(
-      base::Bind(&TracingHandler::OnCategoriesReceived,
-                 weak_factory_.GetWeakPtr(),
-                 command));
-  return command->AsyncResponsePromise();
-}
-
-void TracingHandler::OnRecordingEnabled(
-    scoped_refptr<DevToolsProtocol::Command> command) {
-  StartResponse response;
-  client_->SendStartResponse(command, response);
-}
-
-void TracingHandler::OnBufferUsage(float usage) {
-  BufferUsageParams params;
-  params.set_value(usage);
-  client_->BufferUsage(params);
-}
-
-void TracingHandler::OnCategoriesReceived(
-    scoped_refptr<DevToolsProtocol::Command> command,
-    const std::set<std::string>& category_set) {
-  std::vector<std::string> categories(category_set.begin(), category_set.end());
-  GetCategoriesResponse response;
-  response.set_categories(categories);
-  client_->SendGetCategoriesResponse(command, response);
-}
-
-base::debug::TraceOptions TracingHandler::TraceOptionsFromString(
-    const std::string* options) {
-  base::debug::TraceOptions ret;
-  if (!options)
-    return ret;
-
-  std::vector<std::string> split;
-  std::vector<std::string>::iterator iter;
-
-  base::SplitString(*options, ',', &split);
-  for (iter = split.begin(); iter != split.end(); ++iter) {
-    if (*iter == kRecordUntilFull) {
-      ret.record_mode = base::debug::RECORD_UNTIL_FULL;
-    } else if (*iter == kRecordContinuously) {
-      ret.record_mode = base::debug::RECORD_CONTINUOUSLY;
-    } else if (*iter == kRecordAsMuchAsPossible) {
-      ret.record_mode = base::debug::RECORD_AS_MUCH_AS_POSSIBLE;
-    } else if (*iter == kEnableSampling) {
-      ret.enable_sampling = true;
-    }
-  }
-  return ret;
-}
-
-void TracingHandler::SetupTimer(double usage_reporting_interval) {
-  if (usage_reporting_interval == 0) return;
-
-  if (usage_reporting_interval < kMinimumReportingInterval)
-      usage_reporting_interval = kMinimumReportingInterval;
-
-  base::TimeDelta interval = base::TimeDelta::FromMilliseconds(
-      std::ceil(usage_reporting_interval));
-  buffer_usage_poll_timer_.reset(new base::Timer(
-      FROM_HERE,
-      interval,
-      base::Bind(
-          base::IgnoreResult(&TracingController::GetTraceBufferPercentFull),
-          base::Unretained(TracingController::GetInstance()),
-          base::Bind(&TracingHandler::OnBufferUsage,
-                     weak_factory_.GetWeakPtr())),
-      true));
-  buffer_usage_poll_timer_->Reset();
-}
-
-void TracingHandler::DisableRecording(bool abort) {
-  is_recording_ = false;
-  buffer_usage_poll_timer_.reset();
-  TracingController::GetInstance()->DisableRecording(
-      abort ? nullptr : new DevToolsTraceSinkProxy(weak_factory_.GetWeakPtr()));
+  return NULL;
 }
 
 }  // namespace tracing
 }  // namespace devtools
 }  // namespace content