Revert of arc: enable Android tracing from chrome://tracing in dev mode

chrome/browser/chromeos/arc/tracing/arc_tracing_bridge.cc

Index: chrome/browser/chromeos/arc/tracing/arc_tracing_bridge.cc
diff --git a/chrome/browser/chromeos/arc/tracing/arc_tracing_bridge.cc b/chrome/browser/chromeos/arc/tracing/arc_tracing_bridge.cc
deleted file mode 100644
index b45a4e1ea2e4a5aa8a1af3753faa1b7ba0b359ff..0000000000000000000000000000000000000000
--- a/chrome/browser/chromeos/arc/tracing/arc_tracing_bridge.cc
+++ /dev/null
@@ -1,106 +0,0 @@
-// Copyright 2017 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 "chrome/browser/chromeos/arc/tracing/arc_tracing_bridge.h"
-
-#include "base/bind.h"
-#include "base/logging.h"
-#include "base/threading/thread_task_runner_handle.h"
-#include "components/arc/arc_bridge_service.h"
-#include "components/arc/arc_service_manager.h"
-#include "content/public/browser/browser_thread.h"
-
-namespace arc {
-
-namespace {
-
-// The prefix of the categories to be shown on the trace selection UI.
-// The space at the end of the string is intentional as the separator between
-// the prefix and the real categories.
-constexpr char kCategoryPrefix[] = TRACE_DISABLED_BY_DEFAULT("android ");
-
-}  // namespace
-
-struct ArcTracingBridge::Category {
-  // The name used by Android to trigger tracing.
-  std::string name;
-  // The full name shown in the tracing UI in chrome://tracing.
-  std::string full_name;
-};
-
-ArcTracingBridge::ArcTracingBridge(ArcBridgeService* bridge_service)
-    : ArcService(bridge_service), weak_ptr_factory_(this) {
-  arc_bridge_service()->tracing()->AddObserver(this);
-  content::ArcTracingAgent::GetInstance()->SetDelegate(this);
-}
-
-ArcTracingBridge::~ArcTracingBridge() {
-  content::ArcTracingAgent::GetInstance()->SetDelegate(nullptr);
-  arc_bridge_service()->tracing()->RemoveObserver(this);
-}
-
-void ArcTracingBridge::OnInstanceReady() {
-  DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
-  mojom::TracingInstance* tracing_instance = ARC_GET_INSTANCE_FOR_METHOD(
-      arc_bridge_service()->tracing(), QueryAvailableCategories);
-  if (!tracing_instance)
-    return;
-  tracing_instance->QueryAvailableCategories(base::Bind(
-      &ArcTracingBridge::OnCategoriesReady, weak_ptr_factory_.GetWeakPtr()));
-}
-
-void ArcTracingBridge::OnCategoriesReady(
-    const std::vector<std::string>& categories) {
-  DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
-
-  // There is no API in TraceLog to remove a category from the UI. As an
-  // alternative, the old category that is no longer in |categories_| will be
-  // ignored when calling |StartTracing|.
-  categories_.clear();
-  for (const auto& category : categories) {
-    categories_.push_back({category, kCategoryPrefix + category});
-    // Show the category name in the selection UI.
-    base::trace_event::TraceLog::GetCategoryGroupEnabled(
-        categories_.back().full_name.c_str());
-  }
-}
-
-void ArcTracingBridge::StartTracing(
-    const base::trace_event::TraceConfig& trace_config,
-    const StartTracingCallback& callback) {
-  DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
-
-  mojom::TracingInstance* tracing_instance = ARC_GET_INSTANCE_FOR_METHOD(
-      arc_bridge_service()->tracing(), StartTracing);
-  if (!tracing_instance) {
-    // Use PostTask as the convention of TracingAgent. The caller expects
-    // callback to be called after this function returns.
-    base::ThreadTaskRunnerHandle::Get()->PostTask(FROM_HERE,
-                                                  base::Bind(callback, false));
-    return;
-  }
-
-  std::vector<std::string> selected_categories;
-  for (const auto& category : categories_) {
-    if (trace_config.IsCategoryGroupEnabled(category.full_name.c_str()))
-      selected_categories.push_back(category.name);
-  }
-
-  tracing_instance->StartTracing(selected_categories, callback);
-}
-
-void ArcTracingBridge::StopTracing(const StopTracingCallback& callback) {
-  DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
-
-  mojom::TracingInstance* tracing_instance =
-      ARC_GET_INSTANCE_FOR_METHOD(arc_bridge_service()->tracing(), StopTracing);
-  if (!tracing_instance) {
-    base::ThreadTaskRunnerHandle::Get()->PostTask(FROM_HERE,
-                                                  base::Bind(callback, false));
-    return;
-  }
-  tracing_instance->StopTracing(callback);
-}
-
-}  // namespace arc