Revert of [devtools] Support different encodings for Page.CaptureScreenshot.

chrome/browser/chromeos/policy/remote_commands/device_command_screenshot_job.cc

 // Copyright 2015 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/policy/remote_commands/device_command_screenshot_job.h"
 
 #include <fstream>
 #include <utility>
 
 #include "ash/shell.h"
@@ skipping 42 matching lines @@
 // String constant signalling that the data segment contains screenshots.
 const char* const kFileTypeScreenshotFile = "screenshot_file";
 
 // String constant identifying the upload url field in the command payload.
 const char* const kUploadUrlFieldName = "fileUploadUrl";
 
 // A helper function which invokes |store_screenshot_callback| on |task_runner|.
 void RunStoreScreenshotOnTaskRunner(
     const ui::GrabWindowSnapshotAsyncPNGCallback& store_screenshot_callback,
     scoped_refptr<base::TaskRunner> task_runner,
-    scoped_refptr<base::RefCountedMemory> png_data) {
+    scoped_refptr<base::RefCountedBytes> png_data) {
   task_runner->PostTask(FROM_HERE,
                         base::Bind(store_screenshot_callback, png_data));
 }
 
 }  // namespace
 
 class DeviceCommandScreenshotJob::Payload
     : public RemoteCommandJob::ResultPayload {
  public:
   explicit Payload(ResultCode result_code);
@@ skipping 76 matching lines @@
     return false;
   std::string upload_url;
   if (!payload->GetString(kUploadUrlFieldName, &upload_url))
     return false;
   upload_url_ = GURL(upload_url);
   return true;
 }
 
 void DeviceCommandScreenshotJob::StoreScreenshot(
     size_t screen,
-    scoped_refptr<base::RefCountedMemory> png_data) {
+    scoped_refptr<base::RefCountedBytes> png_data) {
   screenshots_.insert(std::make_pair(screen, png_data));
   DCHECK_LT(0, num_pending_screenshots_);
   --num_pending_screenshots_;
 
   if (num_pending_screenshots_ == 0)
     StartScreenshotUpload();
 }
 
 void DeviceCommandScreenshotJob::StartScreenshotUpload() {
   for (const auto& screenshot_entry : screenshots_) {
@@ skipping 70 matching lines @@
                               weak_ptr_factory_.GetWeakPtr(), screen),
                    base::ThreadTaskRunnerHandle::Get()));
   }
 }
 
 void DeviceCommandScreenshotJob::TerminateImpl() {
   weak_ptr_factory_.InvalidateWeakPtrs();
 }
 
 }  // namespace policy