Revert 180055: Very likely caused http://crbug.com/173885

> Moving chrome://tracing to content.
> 
> BUG=169170
> Review URL: https://codereview.chromium.org/12088099

TBR=jam@chromium.org
Review URL: https://codereview.chromium.org/12194007

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@180282 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 0 insertions, 104 deletions

diff --git a/content/browser/tracing/trace_subscriber_stdio.cc b/content/browser/tracing/trace_subscriber_stdio.cc
deleted file mode 100644
index d366f1b..0000000
--- a/content/browser/tracing/trace_subscriber_stdio.cc
+++ /dev/null
@@ -1,104 +0,0 @@
-// Copyright (c) 2012 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/tracing/trace_subscriber_stdio.h"
-
-#include "base/bind.h"
-#include "base/debug/trace_event.h"
-#include "base/logging.h"
-#include "base/threading/sequenced_worker_pool.h"
-#include "content/public/browser/browser_thread.h"
-
-namespace content {
-
-// All method calls on this class are done on a SequencedWorkerPool thread.
-class TraceSubscriberStdioImpl
-    : public base::RefCountedThreadSafe<TraceSubscriberStdioImpl> {
- public:
-  explicit TraceSubscriberStdioImpl(const FilePath& path)
-      : path_(path),
-        file_(0) {}
-
-  void OnStart() {
-    DCHECK(!file_);
-    trace_buffer_.SetOutputCallback(
-        base::Bind(&TraceSubscriberStdioImpl::Write, this));
-    file_ = file_util::OpenFile(path_, "w+");
-    if (IsValid()) {
-      LOG(INFO) << "Logging performance trace to file: " << path_.value();
-      trace_buffer_.Start();
-    } else {
-      LOG(ERROR) << "Failed to open performance trace file: " << path_.value();
-    }
-  }
-
-  void OnData(const scoped_refptr<base::RefCountedString>& data_ptr) {
-    trace_buffer_.AddFragment(data_ptr->data());
-  }
-
-  void OnEnd() {
-    trace_buffer_.Finish();
-    CloseFile();
-  }
-
- private:
-  friend class base::RefCountedThreadSafe<TraceSubscriberStdioImpl>;
-
-  ~TraceSubscriberStdioImpl() {
-    CloseFile();
-  }
-
-  bool IsValid() const {
-    return file_ && (0 == ferror(file_));
-  }
-
-  void CloseFile() {
-    if (file_) {
-      fclose(file_);
-      file_ = 0;
-    }
-    // This is important, as it breaks a reference cycle.
-    trace_buffer_.SetOutputCallback(
-        base::debug::TraceResultBuffer::OutputCallback());
-  }
-
-  void Write(const std::string& output_str) {
-    if (IsValid()) {
-      size_t written = fwrite(output_str.data(), 1, output_str.size(), file_);
-      if (written != output_str.size()) {
-        LOG(ERROR) << "Error " << ferror(file_) << " in fwrite() to trace file";
-        CloseFile();
-      }
-    }
-  }
-
-  FilePath path_;
-  FILE* file_;
-  base::debug::TraceResultBuffer trace_buffer_;
-};
-
-TraceSubscriberStdio::TraceSubscriberStdio(const FilePath& path)
-    : impl_(new TraceSubscriberStdioImpl(path)) {
-  BrowserThread::PostBlockingPoolSequencedTask(
-      __FILE__, FROM_HERE,
-      base::Bind(&TraceSubscriberStdioImpl::OnStart, impl_));
-}
-
-TraceSubscriberStdio::~TraceSubscriberStdio() {
-}
-
-void TraceSubscriberStdio::OnEndTracingComplete() {
-  BrowserThread::PostBlockingPoolSequencedTask(
-      __FILE__, FROM_HERE,
-      base::Bind(&TraceSubscriberStdioImpl::OnEnd, impl_));
-}
-
-void TraceSubscriberStdio::OnTraceDataCollected(
-    const scoped_refptr<base::RefCountedString>& data_ptr) {
-  BrowserThread::PostBlockingPoolSequencedTask(
-      __FILE__, FROM_HERE,
-      base::Bind(&TraceSubscriberStdioImpl::OnData, impl_, data_ptr));
-}
-
-}  // namespace content