Move base/debug/trace_event* to base/trace_event/ [part 1]

Trace Event used to be a single file, base/debug/trace_event.h. Then we
added more functionality, so it was base/debug/trace_event*.*
For many years, we have had per-file OWNERS for Trace Event based off
of trace_event*. This let us do trace_event improvements/iteration out
of band with the much slower base/OWNERS process.
But, this leads to a lot of poor filename choices for tracing related
features, specifically to fall under trace event reviewers instead of
base/ reviewers. That's clearly wrong.

BUG=451032

Review URL: https://codereview.chromium.org/837303004

Cr-Commit-Position: refs/heads/master@{#313266}

1 files changed, 0 insertions, 240 deletions

diff --git a/base/debug/trace_event_memory_unittest.cc b/base/debug/trace_event_memory_unittest.cc
deleted file mode 100644
index 12135b8..0000000
--- a/base/debug/trace_event_memory_unittest.cc
+++ /dev/null
@@ -1,240 +0,0 @@
-// Copyright 2013 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 "base/debug/trace_event_memory.h"
-
-#include <sstream>
-#include <string>
-
-#include "base/debug/trace_event_impl.h"
-#include "base/message_loop/message_loop.h"
-#include "testing/gtest/include/gtest/gtest.h"
-
-#if defined(TCMALLOC_TRACE_MEMORY_SUPPORTED)
-#include "third_party/tcmalloc/chromium/src/gperftools/heap-profiler.h"
-#endif
-
-namespace base {
-namespace debug {
-
-// Tests for the trace event memory tracking system. Exists as a class so it
-// can be a friend of TraceMemoryController.
-class TraceMemoryTest : public testing::Test {
- public:
-  TraceMemoryTest() {}
-  ~TraceMemoryTest() override {}
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(TraceMemoryTest);
-};
-
-//////////////////////////////////////////////////////////////////////////////
-
-#if defined(TCMALLOC_TRACE_MEMORY_SUPPORTED)
-
-TEST_F(TraceMemoryTest, TraceMemoryController) {
-  MessageLoop message_loop;
-
-  // Start with no observers of the TraceLog.
-  EXPECT_EQ(0u, TraceLog::GetInstance()->GetObserverCountForTest());
-
-  // Creating a controller adds it to the TraceLog observer list.
-  scoped_ptr<TraceMemoryController> controller(
-      new TraceMemoryController(
-          message_loop.message_loop_proxy(),
-          ::HeapProfilerWithPseudoStackStart,
-          ::HeapProfilerStop,
-          ::GetHeapProfile));
-  EXPECT_EQ(1u, TraceLog::GetInstance()->GetObserverCountForTest());
-  EXPECT_TRUE(
-      TraceLog::GetInstance()->HasEnabledStateObserver(controller.get()));
-
-  // By default the observer isn't dumping memory profiles.
-  EXPECT_FALSE(controller->IsTimerRunningForTest());
-
-  // Simulate enabling tracing.
-  controller->StartProfiling();
-  message_loop.RunUntilIdle();
-  EXPECT_TRUE(controller->IsTimerRunningForTest());
-
-  // Simulate disabling tracing.
-  controller->StopProfiling();
-  message_loop.RunUntilIdle();
-  EXPECT_FALSE(controller->IsTimerRunningForTest());
-
-  // Deleting the observer removes it from the TraceLog observer list.
-  controller.reset();
-  EXPECT_EQ(0u, TraceLog::GetInstance()->GetObserverCountForTest());
-}
-
-TEST_F(TraceMemoryTest, ScopedTraceMemory) {
-  ScopedTraceMemory::InitForTest();
-
-  // Start with an empty stack.
-  EXPECT_EQ(0, ScopedTraceMemory::GetStackDepthForTest());
-
-  {
-    // Push an item.
-    ScopedTraceMemory scope1("cat1", "name1");
-    EXPECT_EQ(1, ScopedTraceMemory::GetStackDepthForTest());
-    EXPECT_EQ("cat1", ScopedTraceMemory::GetScopeDataForTest(0).category);
-    EXPECT_EQ("name1", ScopedTraceMemory::GetScopeDataForTest(0).name);
-
-    {
-      // One more item.
-      ScopedTraceMemory scope2("cat2", "name2");
-      EXPECT_EQ(2, ScopedTraceMemory::GetStackDepthForTest());
-      EXPECT_EQ("cat2", ScopedTraceMemory::GetScopeDataForTest(1).category);
-      EXPECT_EQ("name2", ScopedTraceMemory::GetScopeDataForTest(1).name);
-    }
-
-    // Ended scope 2.
-    EXPECT_EQ(1, ScopedTraceMemory::GetStackDepthForTest());
-  }
-
-  // Ended scope 1.
-  EXPECT_EQ(0, ScopedTraceMemory::GetStackDepthForTest());
-
-  ScopedTraceMemory::CleanupForTest();
-}
-
-void TestDeepScopeNesting(int current, int depth) {
-  EXPECT_EQ(current, ScopedTraceMemory::GetStackDepthForTest());
-  ScopedTraceMemory scope("category", "name");
-  if (current < depth)
-    TestDeepScopeNesting(current + 1, depth);
-  EXPECT_EQ(current + 1, ScopedTraceMemory::GetStackDepthForTest());
-}
-
-TEST_F(TraceMemoryTest, DeepScopeNesting) {
-  ScopedTraceMemory::InitForTest();
-
-  // Ensure really deep scopes don't crash.
-  TestDeepScopeNesting(0, 100);
-
-  ScopedTraceMemory::CleanupForTest();
-}
-
-#endif  // defined(TRACE_MEMORY_SUPPORTED)
-
-/////////////////////////////////////////////////////////////////////////////
-
-TEST_F(TraceMemoryTest, AppendHeapProfileTotalsAsTraceFormat) {
-  // Empty input gives empty output.
-  std::string empty_output;
-  AppendHeapProfileTotalsAsTraceFormat("", &empty_output);
-  EXPECT_EQ("", empty_output);
-
-  // Typical case.
-  const char input[] =
-      "heap profile:    357:    55227 [ 14653:  2624014] @ heapprofile";
-  const std::string kExpectedOutput =
-      "{\"current_allocs\": 357, \"current_bytes\": 55227, \"trace\": \"\"}";
-  std::string output;
-  AppendHeapProfileTotalsAsTraceFormat(input, &output);
-  EXPECT_EQ(kExpectedOutput, output);
-}
-
-TEST_F(TraceMemoryTest, AppendHeapProfileLineAsTraceFormat) {
-  // Empty input gives empty output.
-  std::string empty_output;
-  EXPECT_FALSE(AppendHeapProfileLineAsTraceFormat("", &empty_output));
-  EXPECT_EQ("", empty_output);
-
-  // Invalid input returns false.
-  std::string junk_output;
-  EXPECT_FALSE(AppendHeapProfileLineAsTraceFormat("junk", &junk_output));
-
-  // Input with normal category and name entries.
-  const char kCategory[] = "category";
-  const char kName[] = "name";
-  std::ostringstream input;
-  input << "   68:     4195 [  1087:    98009] @ " << &kCategory << " "
-        << &kName;
-  const std::string kExpectedOutput =
-      ",\n"
-      "{"
-      "\"current_allocs\": 68, "
-      "\"current_bytes\": 4195, "
-      "\"trace\": \"name \""
-      "}";
-  std::string output;
-  EXPECT_TRUE(
-      AppendHeapProfileLineAsTraceFormat(input.str().c_str(), &output));
-  EXPECT_EQ(kExpectedOutput, output);
-
-  // Input with with the category "toplevel".
-  // TODO(jamescook): Eliminate this special case and move the logic to the
-  // trace viewer code.
-  const char kTaskCategory[] = "toplevel";
-  const char kTaskName[] = "TaskName";
-  std::ostringstream input2;
-  input2 << "   68:     4195 [  1087:    98009] @ " << &kTaskCategory << " "
-        << &kTaskName;
-  const std::string kExpectedOutput2 =
-      ",\n"
-      "{"
-      "\"current_allocs\": 68, "
-      "\"current_bytes\": 4195, "
-      "\"trace\": \"TaskName->PostTask \""
-      "}";
-  std::string output2;
-  EXPECT_TRUE(
-      AppendHeapProfileLineAsTraceFormat(input2.str().c_str(), &output2));
-  EXPECT_EQ(kExpectedOutput2, output2);
-
-  // Zero current allocations is skipped.
-  std::ostringstream zero_input;
-  zero_input << "   0:     0 [  1087:    98009] @ " << &kCategory << " "
-             << &kName;
-  std::string zero_output;
-  EXPECT_FALSE(AppendHeapProfileLineAsTraceFormat(zero_input.str().c_str(),
-                                                  &zero_output));
-  EXPECT_EQ("", zero_output);
-}
-
-TEST_F(TraceMemoryTest, AppendHeapProfileAsTraceFormat) {
-  // Empty input gives empty output.
-  std::string empty_output;
-  AppendHeapProfileAsTraceFormat("", &empty_output);
-  EXPECT_EQ("", empty_output);
-
-  // Typical case.
-  const char input[] =
-      "heap profile:    357:    55227 [ 14653:  2624014] @ heapprofile\n"
-      "   95:    40940 [   649:   114260] @\n"
-      "   77:    32546 [   742:   106234] @ 0x0 0x0\n"
-      "    0:        0 [   132:     4236] @ 0x0\n"
-      "\n"
-      "MAPPED_LIBRARIES:\n"
-      "1be411fc1000-1be4139e4000 rw-p 00000000 00:00 0\n"
-      "1be4139e4000-1be4139e5000 ---p 00000000 00:00 0\n";
-  const std::string kExpectedOutput =
-      "[{"
-      "\"current_allocs\": 357, "
-      "\"current_bytes\": 55227, "
-      "\"trace\": \"\"},\n"
-      "{\"current_allocs\": 95, "
-      "\"current_bytes\": 40940, "
-      "\"trace\": \"\"},\n"
-      "{\"current_allocs\": 77, "
-      "\"current_bytes\": 32546, "
-      "\"trace\": \"null \""
-      "}]\n";
-  std::string output;
-  AppendHeapProfileAsTraceFormat(input, &output);
-  EXPECT_EQ(kExpectedOutput, output);
-}
-
-TEST_F(TraceMemoryTest, StringFromHexAddress) {
-  EXPECT_STREQ("null", StringFromHexAddress("0x0"));
-  EXPECT_STREQ("error", StringFromHexAddress("not an address"));
-  const char kHello[] = "hello";
-  std::ostringstream hex_address;
-  hex_address << &kHello;
-  EXPECT_STREQ(kHello, StringFromHexAddress(hex_address.str()));
-}
-
-}  // namespace debug
-}  // namespace base