Revert 155861 - Enforce the 'requirements' field in manifests.

Implemented for the "plugins" and "3d" options.

BUG=133027, 130405

Review URL: https://chromiumcodereview.appspot.com/10689097

TBR=eaugusti@chromium.org
Review URL: https://chromiumcodereview.appspot.com/10916220

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@155862 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 0 insertions, 98 deletions

diff --git a/chrome/browser/extensions/requirements_checker.cc b/chrome/browser/extensions/requirements_checker.cc
deleted file mode 100644
index 516f5b0..0000000
--- a/chrome/browser/extensions/requirements_checker.cc
+++ /dev/null
@@ -1,98 +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 "chrome/browser/extensions/requirements_checker.h"
-
-#include "base/bind.h"
-#include "base/utf_string_conversions.h"
-#include "chrome/browser/gpu_feature_checker.h"
-#include "chrome/common/extensions/extension_manifest_constants.h"
-#include "chrome/common/extensions/extension.h"
-#include "chrome/common/extensions/manifest.h"
-#include "content/public/browser/browser_thread.h"
-#include "content/public/common/gpu_feature_type.h"
-#include "grit/generated_resources.h"
-#include "ui/base/l10n/l10n_util.h"
-
-namespace extensions {
-
-RequirementsChecker::RequirementsChecker()
-    : pending_requirement_checks_(0) {
-}
-
-RequirementsChecker::~RequirementsChecker() {
-}
-
-void RequirementsChecker::Check(scoped_refptr<const Extension> extension,
-    base::Callback<void(std::vector<std::string> errors)> callback) {
-  DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
-
-  callback_ = callback;
-  const Extension::Requirements& requirements = extension->requirements();
-
-  if (requirements.npapi) {
-#if defined(OS_CHROMEOS)
-    errors_.push_back(
-        l10n_util::GetStringUTF8(IDS_EXTENSION_NPAPI_NOT_SUPPORTED));
-#endif  // defined(OS_CHROMEOS)
-  }
-
-  if (requirements.webgl) {
-    ++pending_requirement_checks_;
-    webgl_checker_ = new GPUFeatureChecker(
-      content::GPU_FEATURE_TYPE_WEBGL,
-      base::Bind(&RequirementsChecker::SetWebGLAvailability,
-                 AsWeakPtr()));
-  }
-
-  if (requirements.css3d) {
-    ++pending_requirement_checks_;
-    css3d_checker_ = new GPUFeatureChecker(
-      content::GPU_FEATURE_TYPE_ACCELERATED_COMPOSITING,
-      base::Bind(&RequirementsChecker::SetCSS3DAvailability,
-                 AsWeakPtr()));
-  }
-
-  if (pending_requirement_checks_ == 0) {
-    content::BrowserThread::PostTask(content::BrowserThread::UI, FROM_HERE,
-                                     base::Bind(callback_, errors_));
-    // Reset the callback so any ref-counted bound parameters will get released.
-    callback_.Reset();
-    return;
-  }
-  // Running the GPU checkers down here removes any race condition that arises
-  // from the use of pending_requirement_checks_.
-  if (webgl_checker_.get())
-    webgl_checker_->CheckGPUFeatureAvailability();
-  if (css3d_checker_.get())
-    css3d_checker_->CheckGPUFeatureAvailability();
-}
-
-void RequirementsChecker::SetWebGLAvailability(bool available) {
-  if (!available) {
-    errors_.push_back(
-        l10n_util::GetStringUTF8(IDS_EXTENSION_WEBGL_NOT_SUPPORTED));
-  }
-  MaybeRunCallback();
-}
-
-void RequirementsChecker::SetCSS3DAvailability(bool available) {
-  if (!available) {
-    errors_.push_back(
-        l10n_util::GetStringUTF8(IDS_EXTENSION_CSS3D_NOT_SUPPORTED));
-  }
-  MaybeRunCallback();
-}
-
-void RequirementsChecker::MaybeRunCallback() {
-  if (--pending_requirement_checks_ == 0) {
-    content::BrowserThread::PostTask(content::BrowserThread::UI, FROM_HERE,
-                                     base::Bind(callback_, errors_));
-    // Reset the callback so any ref-counted bound parameters will get released.
-    callback_.Reset();
-    errors_.clear();
-  }
-}
-
-}  // namespace extensions