Generalzie GpuBlacklist to GpuControlList.

content/browser/gpu/gpu_control_list.cc

+// Copyright (c) 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 "content/browser/gpu/gpu_control_list.h"
+
+#include "base/cpu.h"
+#include "base/json/json_reader.h"
+#include "base/logging.h"
+#include "base/string_number_conversions.h"
+#include "base/string_util.h"
+#include "base/strings/string_split.h"
+#include "base/sys_info.h"
+#include "content/browser/gpu/gpu_util.h"
+#include "content/public/common/gpu_info.h"
+
+namespace content {
+namespace {
+
+// Break a version string into segments.  Return true if each segment is
+// a valid number.
+bool ProcessVersionString(const std::string& version_string,
+                          char splitter,
+                          std::vector<std::string>* version) {
+  DCHECK(version);
+  base::SplitString(version_string, splitter, version);
+  if (version->size() == 0)
+    return false;
+  // If the splitter is '-', we assume it's a date with format "mm-dd-yyyy";
+  // we split it into the order of "yyyy", "mm", "dd".
+  if (splitter == '-') {
+    std::string year = (*version)[version->size() - 1];
+    for (int i = version->size() - 1; i > 0; --i) {
+      (*version)[i] = (*version)[i - 1];
+    }
+    (*version)[0] = year;
+  }
+  for (size_t i = 0; i < version->size(); ++i) {
+    unsigned num = 0;
+    if (!base::StringToUint((*version)[i], &num))
+      return false;
+  }
+  return true;
+}
+
+// Compare two number strings using numerical ordering.
+// Return  0 if number = number_ref,
+//         1 if number > number_ref,
+//        -1 if number < number_ref.
+int CompareNumericalNumberStrings(
+    const std::string& number, const std::string& number_ref) {
+  unsigned value1 = 0;
+  unsigned value2 = 0;
+  bool valid = base::StringToUint(number, &value1);
+  DCHECK(valid);
+  valid = base::StringToUint(number_ref, &value2);
+  DCHECK(valid);
+  if (value1 == value2)
+    return 0;
+  if (value1 > value2)
+    return 1;
+  return -1;
+}
+
+// Compare two number strings using lexical ordering.
+// Return  0 if number = number_ref,
+//         1 if number > number_ref,
+//        -1 if number < number_ref.
+// We only compare as many digits as number_ref contains.
+// If number_ref is xxx, it's considered as xxx*
+// For example: CompareLexicalNumberStrings("121", "12") returns 0,
+//              CompareLexicalNumberStrings("12", "121") returns -1.
+int CompareLexicalNumberStrings(
+    const std::string& number, const std::string& number_ref) {
+  for (size_t i = 0; i < number_ref.length(); ++i) {
+    unsigned value1 = 0;
+    if (i < number.length())
+      value1 = number[i] - '0';
+    unsigned value2 = number_ref[i] - '0';
+    if (value1 > value2)
+      return 1;
+    if (value1 < value2)
+      return -1;
+  }
+  return 0;
+}
+
+bool GpuUnmatched(uint32 vendor_id, const std::vector<uint32>& device_id_list,
+                  const GPUInfo::GPUDevice& gpu) {
+  if (vendor_id == 0)
+    return false;
+  if (vendor_id != gpu.vendor_id)
+    return true;
+  bool device_specified = false;
+  for (size_t i = 0; i < device_id_list.size(); ++i) {
+    if (device_id_list[i] == 0)
+      continue;
+    if (device_id_list[i] == gpu.device_id)
+      return false;
+    device_specified = true;
+  }
+  return device_specified;
+}
+
+const char kMultiGpuStyleStringAMDSwitchable[] = "amd_switchable";
+const char kMultiGpuStyleStringOptimus[] = "optimus";
+
+const char kMultiGpuCategoryStringPrimary[] = "primary";
+const char kMultiGpuCategoryStringSecondary[] = "secondary";
+const char kMultiGpuCategoryStringAny[] = "any";
+
+const char kVersionStyleStringNumerical[] = "numerical";
+const char kVersionStyleStringLexical[] = "lexical";
+
+const char kOp[] = "op";
+
+}  // namespace anonymous
+
+GpuControlList::VersionInfo::VersionInfo(
+    const std::string& version_op,
+    const std::string& version_style,
+    const std::string& version_string,
+    const std::string& version_string2)
+    : version_style_(kVersionStyleNumerical) {
+  op_ = StringToNumericOp(version_op);
+  if (op_ == kUnknown || op_ == kAny)
+    return;
+  version_style_ = StringToVersionStyle(version_style);
+  if (!ProcessVersionString(version_string, '.', &version_)) {
+    op_ = kUnknown;
+    return;
+  }
+  if (op_ == kBetween) {
+    if (!ProcessVersionString(version_string2, '.', &version2_))
+      op_ = kUnknown;
+  }
+}
+
+GpuControlList::VersionInfo::~VersionInfo() {
+}
+
+bool GpuControlList::VersionInfo::Contains(
+    const std::string& version_string) const {
+  return Contains(version_string, '.');
+}
+
+bool GpuControlList::VersionInfo::Contains(
+    const std::string& version_string, char splitter) const {
+  if (op_ == kUnknown)
+    return false;
+  if (op_ == kAny)
+    return true;
+  std::vector<std::string> version;
+  if (!ProcessVersionString(version_string, splitter, &version))
+    return false;
+  int relation = Compare(version, version_, version_style_);
+  if (op_ == kEQ)
+    return (relation == 0);
+  else if (op_ == kLT)
+    return (relation < 0);
+  else if (op_ == kLE)
+    return (relation <= 0);
+  else if (op_ == kGT)
+    return (relation > 0);
+  else if (op_ == kGE)
+    return (relation >= 0);
+  // op_ == kBetween
+  if (relation < 0)
+    return false;
+  return Compare(version, version2_, version_style_) <= 0;
+}
+
+bool GpuControlList::VersionInfo::IsValid() const {
+  return (op_ != kUnknown && version_style_ != kVersionStyleUnknown);
+}
+
+bool GpuControlList::VersionInfo::IsLexical() const {
+  return version_style_ == kVersionStyleLexical;
+}
+
+// static
+int GpuControlList::VersionInfo::Compare(
+    const std::vector<std::string>& version,
+    const std::vector<std::string>& version_ref,
+    VersionStyle version_style) {
+  DCHECK(version.size() > 0 && version_ref.size() > 0);
+  DCHECK(version_style != kVersionStyleUnknown);
+  for (size_t i = 0; i < version_ref.size(); ++i) {
+    if (i >= version.size())
+      return 0;
+    int ret = 0;
+    // We assume both versions are checked by ProcessVersionString().
+    if (i > 0 && version_style == kVersionStyleLexical)
+      ret = CompareLexicalNumberStrings(version[i], version_ref[i]);
+    else
+      ret = CompareNumericalNumberStrings(version[i], version_ref[i]);
+    if (ret != 0)
+      return ret;
+  }
+  return 0;
+}
+
+// static
+GpuControlList::VersionInfo::VersionStyle
+GpuControlList::VersionInfo::StringToVersionStyle(
+    const std::string& version_style) {
+  if (version_style.empty() || version_style == kVersionStyleStringNumerical)
+    return kVersionStyleNumerical;
+  if (version_style == kVersionStyleStringLexical)
+    return kVersionStyleLexical;
+  return kVersionStyleUnknown;
+}
+
+GpuControlList::OsInfo::OsInfo(const std::string& os,
+                             const std::string& version_op,
+                             const std::string& version_string,
+                             const std::string& version_string2) {
+  type_ = StringToOsType(os);
+  if (type_ != kOsUnknown) {
+    version_info_.reset(
+        new VersionInfo(version_op, "", version_string, version_string2));
+  }
+}
+
+GpuControlList::OsInfo::~OsInfo() {}
+
+bool GpuControlList::OsInfo::Contains(OsType type,
+                                    const std::string& version) const {
+  if (!IsValid())
+    return false;
+  if (type_ != type && type_ != kOsAny)
+    return false;
+  return version_info_->Contains(version);
+}
+
+bool GpuControlList::OsInfo::IsValid() const {
+  return type_ != kOsUnknown && version_info_->IsValid();
+}
+
+GpuControlList::OsType GpuControlList::OsInfo::type() const {
+  return type_;
+}
+
+GpuControlList::OsType GpuControlList::OsInfo::StringToOsType(
+    const std::string& os) {
+  if (os == "win")
+    return kOsWin;
+  else if (os == "macosx")
+    return kOsMacosx;
+  else if (os == "android")
+    return kOsAndroid;
+  else if (os == "linux")
+    return kOsLinux;
+  else if (os == "chromeos")
+    return kOsChromeOS;
+  else if (os == "any")
+    return kOsAny;
+  return kOsUnknown;
+}
+
+GpuControlList::MachineModelInfo::MachineModelInfo(
+    const std::string& name_op,
+    const std::string& name_value,
+    const std::string& version_op,
+    const std::string& version_string,
+    const std::string& version_string2) {
+  name_info_.reset(new StringInfo(name_op, name_value));
+  version_info_.reset(
+      new VersionInfo(version_op, "", version_string, version_string2));
+}
+
+GpuControlList::MachineModelInfo::~MachineModelInfo() {}
+
+bool GpuControlList::MachineModelInfo::Contains(
+    const std::string& name, const std::string& version) const {
+  if (!IsValid())
+    return false;
+  if (!name_info_->Contains(name))
+    return false;
+  return version_info_->Contains(version);
+}
+
+bool GpuControlList::MachineModelInfo::IsValid() const {
+  return name_info_->IsValid() && version_info_->IsValid();
+}
+
+GpuControlList::StringInfo::StringInfo(const std::string& string_op,
+                                     const std::string& string_value) {
+  op_ = StringToOp(string_op);
+  value_ = StringToLowerASCII(string_value);
+}
+
+bool GpuControlList::StringInfo::Contains(const std::string& value) const {
+  std::string my_value = StringToLowerASCII(value);
+  switch (op_) {
+    case kContains:
+      return strstr(my_value.c_str(), value_.c_str()) != NULL;
+    case kBeginWith:
+      return StartsWithASCII(my_value, value_, false);
+    case kEndWith:
+      return EndsWith(my_value, value_, false);
+    case kEQ:
+      return value_ == my_value;
+    default:
+      return false;
+  }
+}
+
+bool GpuControlList::StringInfo::IsValid() const {
+  return op_ != kUnknown;
+}
+
+GpuControlList::StringInfo::Op GpuControlList::StringInfo::StringToOp(
+    const std::string& string_op) {
+  if (string_op == "=")
+    return kEQ;
+  else if (string_op == "contains")
+    return kContains;
+  else if (string_op == "beginwith")
+    return kBeginWith;
+  else if (string_op == "endwith")
+    return kEndWith;
+  return kUnknown;
+}
+
+GpuControlList::FloatInfo::FloatInfo(const std::string& float_op,
+                                     const std::string& float_value,
+                                     const std::string& float_value2)
+    : op_(kUnknown),
+      value_(0.f),
+      value2_(0.f) {
+  double dvalue = 0;
+  if (!base::StringToDouble(float_value, &dvalue)) {
+    op_ = kUnknown;
+    return;
+  }
+  value_ = static_cast<float>(dvalue);
+  op_ = StringToNumericOp(float_op);
+  if (op_ == kBetween) {
+    if (!base::StringToDouble(float_value2, &dvalue)) {
+      op_ = kUnknown;
+      return;
+    }
+    value2_ = static_cast<float>(dvalue);
+  }
+}
+
+bool GpuControlList::FloatInfo::Contains(float value) const {
+  if (op_ == kUnknown)
+    return false;
+  if (op_ == kAny)
+    return true;
+  if (op_ == kEQ)
+    return (value == value_);
+  if (op_ == kLT)
+    return (value < value_);
+  if (op_ == kLE)
+    return (value <= value_);
+  if (op_ == kGT)
+    return (value > value_);
+  if (op_ == kGE)
+    return (value >= value_);
+  DCHECK(op_ == kBetween);
+  return ((value_ <= value && value <= value2_) ||
+          (value2_ <= value && value <= value_));
+}
+
+bool GpuControlList::FloatInfo::IsValid() const {
+  return op_ != kUnknown;
+}
+
+GpuControlList::IntInfo::IntInfo(const std::string& int_op,
+                                 const std::string& int_value,
+                                 const std::string& int_value2)
+    : op_(kUnknown),
+      value_(0),
+      value2_(0) {
+  if (!base::StringToInt(int_value, &value_)) {
+    op_ = kUnknown;
+    return;
+  }
+  op_ = StringToNumericOp(int_op);
+  if (op_ == kBetween &&
+      !base::StringToInt(int_value2, &value2_))
+    op_ = kUnknown;
+}
+
+bool GpuControlList::IntInfo::Contains(int value) const {
+  if (op_ == kUnknown)
+    return false;
+  if (op_ == kAny)
+    return true;
+  if (op_ == kEQ)
+    return (value == value_);
+  if (op_ == kLT)
+    return (value < value_);
+  if (op_ == kLE)
+    return (value <= value_);
+  if (op_ == kGT)
+    return (value > value_);
+  if (op_ == kGE)
+    return (value >= value_);
+  DCHECK(op_ == kBetween);
+  return ((value_ <= value && value <= value2_) ||
+          (value2_ <= value && value <= value_));
+}
+
+bool GpuControlList::IntInfo::IsValid() const {
+  return op_ != kUnknown;
+}
+
+// static
+GpuControlList::ScopedGpuControlListEntry
+GpuControlList::GpuControlListEntry::GetEntryFromValue(
+    const base::DictionaryValue* value, bool top_level,
+    const FeatureMap& feature_map) {
+  DCHECK(value);
+  ScopedGpuControlListEntry entry(new GpuControlListEntry());
+
+  size_t dictionary_entry_count = 0;
+
+  if (top_level) {
+    uint32 id;
+    if (!value->GetInteger("id", reinterpret_cast<int*>(&id)) ||
+        !entry->SetId(id)) {
+      LOG(WARNING) << "Malformed id entry " << entry->id();
+      return NULL;
+    }
+    dictionary_entry_count++;
+
+    bool disabled;
+    if (value->GetBoolean("disabled", &disabled)) {
+      entry->SetDisabled(disabled);
+      dictionary_entry_count++;
+    }
+  }
+
+  std::string description;
+  if (value->GetString("description", &description)) {
+    entry->description_ = description;
+    dictionary_entry_count++;
+  } else {
+    entry->description_ = "The GPU is unavailable for an unexplained reason.";
+  }
+
+  const base::ListValue* cr_bugs;
+  if (value->GetList("cr_bugs", &cr_bugs)) {
+    for (size_t i = 0; i < cr_bugs->GetSize(); ++i) {
+      int bug_id;
+      if (cr_bugs->GetInteger(i, &bug_id)) {
+        entry->cr_bugs_.push_back(bug_id);
+      } else {
+        LOG(WARNING) << "Malformed cr_bugs entry " << entry->id();
+        return NULL;
+      }
+    }
+    dictionary_entry_count++;
+  }
+
+  const base::ListValue* webkit_bugs;
+  if (value->GetList("webkit_bugs", &webkit_bugs)) {
+    for (size_t i = 0; i < webkit_bugs->GetSize(); ++i) {
+      int bug_id;
+      if (webkit_bugs->GetInteger(i, &bug_id)) {
+        entry->webkit_bugs_.push_back(bug_id);
+      } else {
+        LOG(WARNING) << "Malformed webkit_bugs entry " << entry->id();
+        return NULL;
+      }
+    }
+    dictionary_entry_count++;
+  }
+
+  const base::DictionaryValue* os_value = NULL;
+  if (value->GetDictionary("os", &os_value)) {
+    std::string os_type;
+    std::string os_version_op = "any";
+    std::string os_version_string;
+    std::string os_version_string2;
+    os_value->GetString("type", &os_type);
+    const base::DictionaryValue* os_version_value = NULL;
+    if (os_value->GetDictionary("version", &os_version_value)) {
+      os_version_value->GetString(kOp, &os_version_op);
+      os_version_value->GetString("number", &os_version_string);
+      os_version_value->GetString("number2", &os_version_string2);
+    }
+    if (!entry->SetOsInfo(os_type, os_version_op, os_version_string,
+                          os_version_string2)) {
+      LOG(WARNING) << "Malformed os entry " << entry->id();
+      return NULL;
+    }
+    dictionary_entry_count++;
+  }
+
+  std::string vendor_id;
+  if (value->GetString("vendor_id", &vendor_id)) {
+    if (!entry->SetVendorId(vendor_id)) {
+      LOG(WARNING) << "Malformed vendor_id entry " << entry->id();
+      return NULL;
+    }
+    dictionary_entry_count++;
+  }
+
+  const base::ListValue* device_id_list;
+  if (value->GetList("device_id", &device_id_list)) {
+    for (size_t i = 0; i < device_id_list->GetSize(); ++i) {
+        std::string device_id;
+      if (!device_id_list->GetString(i, &device_id) ||
+          !entry->AddDeviceId(device_id)) {
+        LOG(WARNING) << "Malformed device_id entry " << entry->id();
+        return NULL;
+      }
+    }
+    dictionary_entry_count++;
+  }
+
+  std::string multi_gpu_style;
+  if (value->GetString("multi_gpu_style", &multi_gpu_style)) {
+    if (!entry->SetMultiGpuStyle(multi_gpu_style)) {
+      LOG(WARNING) << "Malformed multi_gpu_style entry " << entry->id();
+      return NULL;
+    }
+    dictionary_entry_count++;
+  }
+
+  std::string multi_gpu_category;
+  if (value->GetString("multi_gpu_category", &multi_gpu_category)) {
+    if (!entry->SetMultiGpuCategory(multi_gpu_category)) {
+      LOG(WARNING) << "Malformed multi_gpu_category entry " << entry->id();
+      return NULL;
+    }
+    dictionary_entry_count++;
+  }
+
+  const base::DictionaryValue* driver_vendor_value = NULL;
+  if (value->GetDictionary("driver_vendor", &driver_vendor_value)) {
+    std::string vendor_op;
+    std::string vendor_value;
+    driver_vendor_value->GetString(kOp, &vendor_op);
+    driver_vendor_value->GetString("value", &vendor_value);
+    if (!entry->SetDriverVendorInfo(vendor_op, vendor_value)) {
+      LOG(WARNING) << "Malformed driver_vendor entry " << entry->id();
+      return NULL;
+    }
+    dictionary_entry_count++;
+  }
+
+  const base::DictionaryValue* driver_version_value = NULL;
+  if (value->GetDictionary("driver_version", &driver_version_value)) {
+    std::string driver_version_op = "any";
+    std::string driver_version_style;
+    std::string driver_version_string;
+    std::string driver_version_string2;
+    driver_version_value->GetString(kOp, &driver_version_op);
+    driver_version_value->GetString("style", &driver_version_style);
+    driver_version_value->GetString("number", &driver_version_string);
+    driver_version_value->GetString("number2", &driver_version_string2);
+    if (!entry->SetDriverVersionInfo(driver_version_op,
+                                     driver_version_style,
+                                     driver_version_string,
+                                     driver_version_string2)) {
+      LOG(WARNING) << "Malformed driver_version entry " << entry->id();
+      return NULL;
+    }
+    dictionary_entry_count++;
+  }
+
+  const base::DictionaryValue* driver_date_value = NULL;
+  if (value->GetDictionary("driver_date", &driver_date_value)) {
+    std::string driver_date_op = "any";
+    std::string driver_date_string;
+    std::string driver_date_string2;
+    driver_date_value->GetString(kOp, &driver_date_op);
+    driver_date_value->GetString("number", &driver_date_string);
+    driver_date_value->GetString("number2", &driver_date_string2);
+    if (!entry->SetDriverDateInfo(driver_date_op, driver_date_string,
+                                  driver_date_string2)) {
+      LOG(WARNING) << "Malformed driver_date entry " << entry->id();
+      return NULL;
+    }
+    dictionary_entry_count++;
+  }
+
+  const base::DictionaryValue* gl_vendor_value = NULL;
+  if (value->GetDictionary("gl_vendor", &gl_vendor_value)) {
+    std::string vendor_op;
+    std::string vendor_value;
+    gl_vendor_value->GetString(kOp, &vendor_op);
+    gl_vendor_value->GetString("value", &vendor_value);
+    if (!entry->SetGLVendorInfo(vendor_op, vendor_value)) {
+      LOG(WARNING) << "Malformed gl_vendor entry " << entry->id();
+      return NULL;
+    }
+    dictionary_entry_count++;
+  }
+
+  const base::DictionaryValue* gl_renderer_value = NULL;
+  if (value->GetDictionary("gl_renderer", &gl_renderer_value)) {
+    std::string renderer_op;
+    std::string renderer_value;
+    gl_renderer_value->GetString(kOp, &renderer_op);
+    gl_renderer_value->GetString("value", &renderer_value);
+    if (!entry->SetGLRendererInfo(renderer_op, renderer_value)) {
+      LOG(WARNING) << "Malformed gl_renderer entry " << entry->id();
+      return NULL;
+    }
+    dictionary_entry_count++;
+  }
+
+  const base::DictionaryValue* cpu_brand_value = NULL;
+  if (value->GetDictionary("cpu_info", &cpu_brand_value)) {
+    std::string cpu_op;
+    std::string cpu_value;
+    cpu_brand_value->GetString(kOp, &cpu_op);
+    cpu_brand_value->GetString("value", &cpu_value);
+    if (!entry->SetCpuBrand(cpu_op, cpu_value)) {
+      LOG(WARNING) << "Malformed cpu_brand entry " << entry->id();
+      return NULL;
+    }
+    dictionary_entry_count++;
+  }
+
+  const base::DictionaryValue* perf_graphics_value = NULL;
+  if (value->GetDictionary("perf_graphics", &perf_graphics_value)) {
+    std::string op;
+    std::string float_value;
+    std::string float_value2;
+    perf_graphics_value->GetString(kOp, &op);
+    perf_graphics_value->GetString("value", &float_value);
+    perf_graphics_value->GetString("value2", &float_value2);
+    if (!entry->SetPerfGraphicsInfo(op, float_value, float_value2)) {
+      LOG(WARNING) << "Malformed perf_graphics entry " << entry->id();
+      return NULL;
+    }
+    dictionary_entry_count++;
+  }
+
+  const base::DictionaryValue* perf_gaming_value = NULL;
+  if (value->GetDictionary("perf_gaming", &perf_gaming_value)) {
+    std::string op;
+    std::string float_value;
+    std::string float_value2;
+    perf_gaming_value->GetString(kOp, &op);
+    perf_gaming_value->GetString("value", &float_value);
+    perf_gaming_value->GetString("value2", &float_value2);
+    if (!entry->SetPerfGamingInfo(op, float_value, float_value2)) {
+      LOG(WARNING) << "Malformed perf_gaming entry " << entry->id();
+      return NULL;
+    }
+    dictionary_entry_count++;
+  }
+
+  const base::DictionaryValue* perf_overall_value = NULL;
+  if (value->GetDictionary("perf_overall", &perf_overall_value)) {
+    std::string op;
+    std::string float_value;
+    std::string float_value2;
+    perf_overall_value->GetString(kOp, &op);
+    perf_overall_value->GetString("value", &float_value);
+    perf_overall_value->GetString("value2", &float_value2);
+    if (!entry->SetPerfOverallInfo(op, float_value, float_value2)) {
+      LOG(WARNING) << "Malformed perf_overall entry " << entry->id();
+      return NULL;
+    }
+    dictionary_entry_count++;
+  }
+
+  const base::DictionaryValue* machine_model_value = NULL;
+  if (value->GetDictionary("machine_model", &machine_model_value)) {
+    std::string name_op;
+    std::string name_value;
+    const base::DictionaryValue* name = NULL;
+    if (machine_model_value->GetDictionary("name", &name)) {
+      name->GetString(kOp, &name_op);
+      name->GetString("value", &name_value);
+    }
+
+    std::string version_op = "any";
+    std::string version_string;
+    std::string version_string2;
+    const base::DictionaryValue* version_value = NULL;
+    if (machine_model_value->GetDictionary("version", &version_value)) {
+      version_value->GetString(kOp, &version_op);
+      version_value->GetString("number", &version_string);
+      version_value->GetString("number2", &version_string2);
+    }
+    if (!entry->SetMachineModelInfo(
+            name_op, name_value, version_op, version_string, version_string2)) {
+      LOG(WARNING) << "Malformed machine_model entry " << entry->id();
+      return NULL;
+    }
+    dictionary_entry_count++;
+  }
+
+  const base::DictionaryValue* gpu_count_value = NULL;
+  if (value->GetDictionary("gpu_count", &gpu_count_value)) {
+    std::string op;
+    std::string int_value;
+    std::string int_value2;
+    gpu_count_value->GetString(kOp, &op);
+    gpu_count_value->GetString("value", &int_value);
+    gpu_count_value->GetString("value2", &int_value2);
+    if (!entry->SetGpuCountInfo(op, int_value, int_value2)) {
+      LOG(WARNING) << "Malformed gpu_count entry " << entry->id();
+      return NULL;
+    }
+    dictionary_entry_count++;
+  }
+
+  if (top_level) {
+    const base::ListValue* feature_value = NULL;
+    if (value->GetList("features", &feature_value)) {
+      std::vector<std::string> feature_list;
+      for (size_t i = 0; i < feature_value->GetSize(); ++i) {
+        std::string feature;
+        if (feature_value->GetString(i, &feature)) {
+          feature_list.push_back(feature);
+        } else {
+          LOG(WARNING) << "Malformed feature entry " << entry->id();
+          return NULL;
+        }
+      }
+      if (!entry->SetFeatures(feature_list, feature_map)) {
+        LOG(WARNING) << "Malformed feature entry " << entry->id();
+        return NULL;
+      }
+      dictionary_entry_count++;
+    }
+  }
+
+  if (top_level) {
+    const base::ListValue* exception_list_value = NULL;
+    if (value->GetList("exceptions", &exception_list_value)) {
+      for (size_t i = 0; i < exception_list_value->GetSize(); ++i) {
+        const base::DictionaryValue* exception_value = NULL;
+        if (!exception_list_value->GetDictionary(i, &exception_value)) {
+          LOG(WARNING) << "Malformed exceptions entry " << entry->id();
+          return NULL;
+        }
+        ScopedGpuControlListEntry exception(
+            GetEntryFromValue(exception_value, false, feature_map));
+        if (exception == NULL) {
+          LOG(WARNING) << "Malformed exceptions entry " << entry->id();
+          return NULL;
+        }
+        if (exception->contains_unknown_fields_) {
+          LOG(WARNING) << "Exception with unknown fields " << entry->id();
+          entry->contains_unknown_fields_ = true;
+        } else {
+          entry->AddException(exception);
+        }
+      }
+      dictionary_entry_count++;
+    }
+
+    const base::DictionaryValue* browser_version_value = NULL;
+    // browser_version is processed in LoadGpuControlList().
+    if (value->GetDictionary("browser_version", &browser_version_value))
+      dictionary_entry_count++;
+  }
+
+  if (value->size() != dictionary_entry_count) {
+    LOG(WARNING) << "Entry with unknown fields " << entry->id();
+    entry->contains_unknown_fields_ = true;
+  }
+  return entry;
+}
+
+GpuControlList::GpuControlListEntry::GpuControlListEntry()
+    : id_(0),
+      disabled_(false),
+      vendor_id_(0),
+      multi_gpu_style_(kMultiGpuStyleNone),
+      multi_gpu_category_(kMultiGpuCategoryPrimary),
+      contains_unknown_fields_(false),
+      contains_unknown_features_(false) {
+}
+
+GpuControlList::GpuControlListEntry::~GpuControlListEntry() { }
+
+bool GpuControlList::GpuControlListEntry::SetId(uint32 id) {
+  if (id != 0) {
+    id_ = id;
+    return true;
+  }
+  return false;
+}
+
+void GpuControlList::GpuControlListEntry::SetDisabled(bool disabled) {
+  disabled_ = disabled;
+}
+
+bool GpuControlList::GpuControlListEntry::SetOsInfo(
+    const std::string& os,
+    const std::string& version_op,
+    const std::string& version_string,
+    const std::string& version_string2) {
+  os_info_.reset(new OsInfo(os, version_op, version_string, version_string2));
+  return os_info_->IsValid();
+}
+
+bool GpuControlList::GpuControlListEntry::SetVendorId(
+    const std::string& vendor_id_string) {
+  vendor_id_ = 0;
+  return base::HexStringToInt(vendor_id_string,
+                              reinterpret_cast<int*>(&vendor_id_));
+}
+
+bool GpuControlList::GpuControlListEntry::AddDeviceId(
+    const std::string& device_id_string) {
+  uint32 device_id = 0;
+  if (base::HexStringToInt(device_id_string,
+                           reinterpret_cast<int*>(&device_id))) {
+    device_id_list_.push_back(device_id);
+    return true;
+  }
+  return false;
+}
+
+bool GpuControlList::GpuControlListEntry::SetMultiGpuStyle(
+    const std::string& multi_gpu_style_string) {
+  MultiGpuStyle style = StringToMultiGpuStyle(multi_gpu_style_string);
+  if (style == kMultiGpuStyleNone)
+    return false;
+  multi_gpu_style_ = style;
+  return true;
+}
+
+bool GpuControlList::GpuControlListEntry::SetMultiGpuCategory(
+    const std::string& multi_gpu_category_string) {
+  MultiGpuCategory category =
+      StringToMultiGpuCategory(multi_gpu_category_string);
+  if (category == kMultiGpuCategoryNone)
+    return false;
+  multi_gpu_category_ = category;
+  return true;
+}
+
+bool GpuControlList::GpuControlListEntry::SetDriverVendorInfo(
+    const std::string& vendor_op,
+    const std::string& vendor_value) {
+  driver_vendor_info_.reset(new StringInfo(vendor_op, vendor_value));
+  return driver_vendor_info_->IsValid();
+}
+
+bool GpuControlList::GpuControlListEntry::SetDriverVersionInfo(
+    const std::string& version_op,
+    const std::string& version_style,
+    const std::string& version_string,
+    const std::string& version_string2) {
+  driver_version_info_.reset(new VersionInfo(
+      version_op, version_style, version_string, version_string2));
+  return driver_version_info_->IsValid();
+}
+
+bool GpuControlList::GpuControlListEntry::SetDriverDateInfo(
+    const std::string& date_op,
+    const std::string& date_string,
+    const std::string& date_string2) {
+  driver_date_info_.reset(
+      new VersionInfo(date_op, "", date_string, date_string2));
+  return driver_date_info_->IsValid();
+}
+
+bool GpuControlList::GpuControlListEntry::SetGLVendorInfo(
+    const std::string& vendor_op,
+    const std::string& vendor_value) {
+  gl_vendor_info_.reset(new StringInfo(vendor_op, vendor_value));
+  return gl_vendor_info_->IsValid();
+}
+
+bool GpuControlList::GpuControlListEntry::SetGLRendererInfo(
+    const std::string& renderer_op,
+    const std::string& renderer_value) {
+  gl_renderer_info_.reset(new StringInfo(renderer_op, renderer_value));
+  return gl_renderer_info_->IsValid();
+}
+
+bool GpuControlList::GpuControlListEntry::SetCpuBrand(
+    const std::string& cpu_op,
+    const std::string& cpu_value) {
+  cpu_brand_.reset(new StringInfo(cpu_op, cpu_value));
+  return cpu_brand_->IsValid();
+}
+
+bool GpuControlList::GpuControlListEntry::SetPerfGraphicsInfo(
+    const std::string& op,
+    const std::string& float_string,
+    const std::string& float_string2) {
+  perf_graphics_info_.reset(new FloatInfo(op, float_string, float_string2));
+  return perf_graphics_info_->IsValid();
+}
+
+bool GpuControlList::GpuControlListEntry::SetPerfGamingInfo(
+    const std::string& op,
+    const std::string& float_string,
+    const std::string& float_string2) {
+  perf_gaming_info_.reset(new FloatInfo(op, float_string, float_string2));
+  return perf_gaming_info_->IsValid();
+}
+
+bool GpuControlList::GpuControlListEntry::SetPerfOverallInfo(
+    const std::string& op,
+    const std::string& float_string,
+    const std::string& float_string2) {
+  perf_overall_info_.reset(new FloatInfo(op, float_string, float_string2));
+  return perf_overall_info_->IsValid();
+}
+
+bool GpuControlList::GpuControlListEntry::SetMachineModelInfo(
+    const std::string& name_op,
+    const std::string& name_value,
+    const std::string& version_op,
+    const std::string& version_string,
+    const std::string& version_string2) {
+  machine_model_info_.reset(new MachineModelInfo(
+      name_op, name_value, version_op, version_string, version_string2));
+  return machine_model_info_->IsValid();
+}
+
+bool GpuControlList::GpuControlListEntry::SetGpuCountInfo(
+    const std::string& op,
+    const std::string& int_string,
+    const std::string& int_string2) {
+  gpu_count_info_.reset(new IntInfo(op, int_string, int_string2));
+  return gpu_count_info_->IsValid();
+}
+
+bool GpuControlList::GpuControlListEntry::SetFeatures(
+    const std::vector<std::string>& feature_strings,
+    const FeatureMap& feature_map) {
+  size_t size = feature_strings.size();
+  if (size == 0)
+    return false;
+  int features = 0;
+  for (size_t i = 0; i < size; ++i) {
+    int feature = 0;
+    bool valid = StringToFeature(feature_strings[i], &feature, feature_map);
+    if (valid)
+        features |= feature;
+    else
+        contains_unknown_features_ = true;
+  }
+  features_ = features;
+  return true;
+}
+
+void GpuControlList::GpuControlListEntry::AddException(
+    ScopedGpuControlListEntry exception) {
+  exceptions_.push_back(exception);
+}
+
+// static
+GpuControlList::GpuControlListEntry::MultiGpuStyle
+GpuControlList::GpuControlListEntry::StringToMultiGpuStyle(
+    const std::string& style) {
+  if (style == kMultiGpuStyleStringOptimus)
+    return kMultiGpuStyleOptimus;
+  if (style == kMultiGpuStyleStringAMDSwitchable)
+    return kMultiGpuStyleAMDSwitchable;
+  return kMultiGpuStyleNone;
+}
+
+// static
+GpuControlList::GpuControlListEntry::MultiGpuCategory
+GpuControlList::GpuControlListEntry::StringToMultiGpuCategory(
+    const std::string& category) {
+  if (category == kMultiGpuCategoryStringPrimary)
+    return kMultiGpuCategoryPrimary;
+  if (category == kMultiGpuCategoryStringSecondary)
+    return kMultiGpuCategorySecondary;
+  if (category == kMultiGpuCategoryStringAny)
+    return kMultiGpuCategoryAny;
+  return kMultiGpuCategoryNone;
+}
+
+bool GpuControlList::GpuControlListEntry::Contains(
+    OsType os_type, const std::string& os_version,
+    const GPUInfo& gpu_info) const {
+  DCHECK(os_type != kOsAny);
+  if (os_info_.get() != NULL && !os_info_->Contains(os_type, os_version))
+    return false;
+  bool is_not_primary_gpu =
+      GpuUnmatched(vendor_id_, device_id_list_, gpu_info.gpu);
+  bool is_not_secondary_gpu = true;
+  for (size_t i = 0; i < gpu_info.secondary_gpus.size(); ++i) {
+    is_not_secondary_gpu = is_not_secondary_gpu &&
+        GpuUnmatched(vendor_id_, device_id_list_, gpu_info.secondary_gpus[i]);
+  }
+  switch (multi_gpu_category_) {
+    case kMultiGpuCategoryPrimary:
+      if (is_not_primary_gpu)
+        return false;
+      break;
+    case kMultiGpuCategorySecondary:
+      if (is_not_secondary_gpu)
+        return false;
+      break;
+    case kMultiGpuCategoryAny:
+      if (is_not_primary_gpu && is_not_secondary_gpu)
+        return false;
+      break;
+    case kMultiGpuCategoryNone:
+      break;
+  }
+  switch (multi_gpu_style_) {
+    case kMultiGpuStyleOptimus:
+      if (!gpu_info.optimus)
+        return false;
+      break;
+    case kMultiGpuStyleAMDSwitchable:
+      if (!gpu_info.amd_switchable)
+        return false;
+      break;
+    case kMultiGpuStyleNone:
+      break;
+  }
+  if (driver_vendor_info_.get() != NULL && !gpu_info.driver_vendor.empty() &&
+      !driver_vendor_info_->Contains(gpu_info.driver_vendor))
+    return false;
+  if (driver_version_info_.get() != NULL && !gpu_info.driver_version.empty()) {
+    if (!driver_version_info_->Contains(gpu_info.driver_version))
+      return false;
+  }
+  if (driver_date_info_.get() != NULL && !gpu_info.driver_date.empty()) {
+    if (!driver_date_info_->Contains(gpu_info.driver_date, '-'))
+      return false;
+  }
+  if (gl_vendor_info_.get() != NULL && !gpu_info.gl_vendor.empty() &&
+      !gl_vendor_info_->Contains(gpu_info.gl_vendor))
+    return false;
+  if (gl_renderer_info_.get() != NULL && !gpu_info.gl_renderer.empty() &&
+      !gl_renderer_info_->Contains(gpu_info.gl_renderer))
+    return false;
+  if (perf_graphics_info_.get() != NULL &&
+      (gpu_info.performance_stats.graphics == 0.0 ||
+       !perf_graphics_info_->Contains(gpu_info.performance_stats.graphics)))
+    return false;
+  if (perf_gaming_info_.get() != NULL &&
+      (gpu_info.performance_stats.gaming == 0.0 ||
+       !perf_gaming_info_->Contains(gpu_info.performance_stats.gaming)))
+    return false;
+  if (perf_overall_info_.get() != NULL &&
+      (gpu_info.performance_stats.overall == 0.0 ||
+       !perf_overall_info_->Contains(gpu_info.performance_stats.overall)))
+    return false;
+  if (machine_model_info_.get() != NULL) {
+    std::vector<std::string> name_version;
+    base::SplitString(gpu_info.machine_model, ' ', &name_version);
+    if (name_version.size() == 2 &&
+        !machine_model_info_->Contains(name_version[0], name_version[1]))
+      return false;
+  }
+  if (gpu_count_info_.get() != NULL &&
+      !gpu_count_info_->Contains(gpu_info.secondary_gpus.size() + 1))
+    return false;
+  if (cpu_brand_.get() != NULL) {
+    base::CPU cpu_info;
+    if (!cpu_brand_->Contains(cpu_info.cpu_brand()))
+      return false;
+  }
+
+  for (size_t i = 0; i < exceptions_.size(); ++i) {
+    if (exceptions_[i]->Contains(os_type, os_version, gpu_info) &&
+        !exceptions_[i]->NeedsMoreInfo(gpu_info))
+      return false;
+  }
+  return true;
+}
+
+bool GpuControlList::GpuControlListEntry::NeedsMoreInfo(
+    const GPUInfo& gpu_info) const {
+  // We only check for missing info that might be collected with a gl context.
+  // If certain info is missing due to some error, say, we fail to collect
+  // vendor_id/device_id, then even if we launch GPU process and create a gl
+  // context, we won't gather such missing info, so we still return false.
+  if (driver_vendor_info_.get() && gpu_info.driver_vendor.empty())
+    return true;
+  if (driver_version_info_.get() && gpu_info.driver_version.empty())
+    return true;
+  if (gl_vendor_info_.get() && gpu_info.gl_vendor.empty())
+    return true;
+  if (gl_renderer_info_.get() && gpu_info.gl_renderer.empty())
+    return true;
+  for (size_t i = 0; i < exceptions_.size(); ++i) {
+    if (exceptions_[i]->NeedsMoreInfo(gpu_info))
+      return true;
+  }
+  return false;
+}
+
+GpuControlList::OsType GpuControlList::GpuControlListEntry::GetOsType() const {
+  if (os_info_.get() == NULL)
+    return kOsAny;
+  return os_info_->type();
+}
+
+uint32 GpuControlList::GpuControlListEntry::id() const {
+  return id_;
+}
+
+bool GpuControlList::GpuControlListEntry::disabled() const {
+  return disabled_;
+}
+
+int GpuControlList::GpuControlListEntry::GetFeatures() const {
+  return features_;
+}
+
+// static
+bool GpuControlList::GpuControlListEntry::StringToFeature(
+    const std::string& feature_name, int* feature_id,
+    const FeatureMap& feature_map) {
+  FeatureMap::const_iterator iter = feature_map.find(feature_name);
+  if (iter != feature_map.end()) {
+    *feature_id = iter->second;
+    return true;
+  }
+  return false;
+}
+
+GpuControlList::GpuControlList()
+    : max_entry_id_(0),
+      contains_unknown_fields_(false),
+      needs_more_info_(false) {
+}
+
+GpuControlList::~GpuControlList() {
+  Clear();
+}
+
+bool GpuControlList::LoadList(
+    const std::string& json_context, GpuControlList::OsFilter os_filter) {
+  const std::string browser_version_string = "0";
+  return LoadList(browser_version_string, json_context, os_filter);
+}
+
+bool GpuControlList::LoadList(
+    const std::string& browser_version_string,
+    const std::string& json_context,
+    GpuControlList::OsFilter os_filter) {
+  std::vector<std::string> pieces;
+  if (!ProcessVersionString(browser_version_string, '.', &pieces))
+    return false;
+  browser_version_ = browser_version_string;
+
+  scoped_ptr<base::Value> root;
+  root.reset(base::JSONReader::Read(json_context));
+  if (root.get() == NULL || !root->IsType(base::Value::TYPE_DICTIONARY))
+    return false;
+
+  base::DictionaryValue* root_dictionary =
+      static_cast<DictionaryValue*>(root.get());
+  DCHECK(root_dictionary);
+  return LoadList(*root_dictionary, os_filter);
+}
+
+bool GpuControlList::LoadList(const base::DictionaryValue& parsed_json,
+                              GpuControlList::OsFilter os_filter) {
+  std::vector<ScopedGpuControlListEntry> entries;
+
+  parsed_json.GetString("version", &version_);
+  std::vector<std::string> pieces;
+  if (!ProcessVersionString(version_, '.', &pieces))
+    return false;
+
+  const base::ListValue* list = NULL;
+  if (!parsed_json.GetList("entries", &list))
+    return false;
+
+  uint32 max_entry_id = 0;
+  bool contains_unknown_fields = false;
+  for (size_t i = 0; i < list->GetSize(); ++i) {
+    const base::DictionaryValue* list_item = NULL;
+    bool valid = list->GetDictionary(i, &list_item);
+    if (!valid || list_item == NULL)
+      return false;
+    // Check browser version compatibility: if the entry is not for the
+    // current browser version, don't process it.
+    BrowserVersionSupport browser_version_support =
+        IsEntrySupportedByCurrentBrowserVersion(list_item);
+    if (browser_version_support == kMalformed)
+      return false;
+    if (browser_version_support == kUnsupported)
+      continue;
+    DCHECK(browser_version_support == kSupported);
+    ScopedGpuControlListEntry entry(
+        GpuControlListEntry::GetEntryFromValue(list_item, true, feature_map_));
+    if (entry == NULL)
+      return false;
+    if (entry->id() > max_entry_id)
+      max_entry_id = entry->id();
+    // If an unknown field is encountered, skip the entry; if an unknown
+    // feature is encountered, ignore the feature, but keep the entry.
+    if (entry->contains_unknown_fields()) {
+      contains_unknown_fields = true;
+      continue;
+    }
+    if (entry->contains_unknown_features())
+      contains_unknown_fields = true;
+    entries.push_back(entry);
+  }
+
+  Clear();
+  OsType my_os = GetOsType();
+  for (size_t i = 0; i < entries.size(); ++i) {
+    OsType entry_os = entries[i]->GetOsType();
+    if (os_filter == GpuControlList::kAllOs ||
+        entry_os == kOsAny || entry_os == my_os)
+      feature_list_.push_back(entries[i]);
+  }
+  max_entry_id_ = max_entry_id;
+  contains_unknown_fields_ = contains_unknown_fields;
+  return true;
+}
+
+int GpuControlList::MakeDecision(
+    GpuControlList::OsType os,
+    std::string os_version,
+    const GPUInfo& gpu_info) {
+  active_entries_.clear();
+  int features = 0;
+
+  needs_more_info_ = false;
+  int possible_features = 0;
+
+  if (os == kOsAny)
+    os = GetOsType();
+  if (os_version.empty()) {
+    os_version = base::SysInfo::OperatingSystemVersion();
+    size_t pos = os_version.find_first_not_of("0123456789.");
+    if (pos != std::string::npos)
+      os_version = os_version.substr(0, pos);
+  }
+  std::vector<std::string> pieces;
+  if (!ProcessVersionString(os_version, '.', &pieces))
+    os_version = "0";
+
+  for (size_t i = 0; i < feature_list_.size(); ++i) {
+    if (feature_list_[i]->Contains(os, os_version, gpu_info)) {
+      if (!feature_list_[i]->disabled()) {
+        bool not_final = feature_list_[i]->NeedsMoreInfo(gpu_info);
+        if (not_final)
+          possible_features |= feature_list_[i]->GetFeatures();
+        else
+          features |= feature_list_[i]->GetFeatures();
+      }
+      active_entries_.push_back(feature_list_[i]);
+    }
+  }
+
+  if (possible_features != 0 && (possible_features | features) != features)
+    needs_more_info_ = true;
+
+  return features;
+}
+
+void GpuControlList::GetDecisionEntries(
+    std::vector<uint32>* entry_ids, bool disabled) const {
+  DCHECK(entry_ids);
+  entry_ids->clear();
+  for (size_t i = 0; i < active_entries_.size(); ++i) {
+    if (disabled == active_entries_[i]->disabled())
+      entry_ids->push_back(active_entries_[i]->id());
+  }
+}
+
+void GpuControlList::GetReasons(base::ListValue* problem_list) const {
+  DCHECK(problem_list);
+  for (size_t i = 0; i < active_entries_.size(); ++i) {
+    GpuControlListEntry* entry = active_entries_[i];
+    if (entry->disabled())
+      continue;
+    base::DictionaryValue* problem = new base::DictionaryValue();
+
+    problem->SetString("description", entry->description());
+
+    base::ListValue* cr_bugs = new base::ListValue();
+    for (size_t j = 0; j < entry->cr_bugs().size(); ++j)
+      cr_bugs->Append(new base::FundamentalValue(entry->cr_bugs()[j]));
+    problem->Set("crBugs", cr_bugs);
+
+    base::ListValue* webkit_bugs = new base::ListValue();
+    for (size_t j = 0; j < entry->webkit_bugs().size(); ++j) {
+      webkit_bugs->Append(new base::FundamentalValue(entry->webkit_bugs()[j]));
+    }
+    problem->Set("webkitBugs", webkit_bugs);
+
+    problem_list->Append(problem);
+  }
+}
+
+size_t GpuControlList::num_entries() const {
+  return feature_list_.size();
+}
+
+uint32 GpuControlList::max_entry_id() const {
+  return max_entry_id_;
+}
+
+std::string GpuControlList::GetVersion() const {
+  return version_;
+}
+
+GpuControlList::OsType GpuControlList::GetOsType() {
+#if defined(OS_CHROMEOS)
+  return kOsChromeOS;
+#elif defined(OS_WIN)
+  return kOsWin;
+#elif defined(OS_ANDROID)
+  return kOsAndroid;
+#elif defined(OS_LINUX) || defined(OS_OPENBSD)
+  return kOsLinux;
+#elif defined(OS_MACOSX)
+  return kOsMacosx;
+#else
+  return kOsUnknown;
+#endif
+}
+
+void GpuControlList::Clear() {
+  feature_list_.clear();
+  active_entries_.clear();
+  max_entry_id_ = 0;
+  contains_unknown_fields_ = false;
+}
+
+GpuControlList::BrowserVersionSupport
+GpuControlList::IsEntrySupportedByCurrentBrowserVersion(
+    const base::DictionaryValue* value) {
+  DCHECK(value);
+  const base::DictionaryValue* browser_version_value = NULL;
+  if (value->GetDictionary("browser_version", &browser_version_value)) {
+    std::string version_op = "any";
+    std::string version_string;
+    std::string version_string2;
+    browser_version_value->GetString(kOp, &version_op);
+    browser_version_value->GetString("number", &version_string);
+    browser_version_value->GetString("number2", &version_string2);
+    scoped_ptr<VersionInfo> browser_version_info;
+    browser_version_info.reset(
+        new VersionInfo(version_op, "", version_string, version_string2));
+    if (!browser_version_info->IsValid())
+      return kMalformed;
+    if (browser_version_info->Contains(browser_version_))
+      return kSupported;
+    return kUnsupported;
+  }
+  return kSupported;
+}
+
+// static
+GpuControlList::NumericOp GpuControlList::StringToNumericOp(
+    const std::string& op) {
+  if (op == "=")
+    return kEQ;
+  if (op == "<")
+    return kLT;
+  if (op == "<=")
+    return kLE;
+  if (op == ">")
+    return kGT;
+  if (op == ">=")
+    return kGE;
+  if (op == "any")
+    return kAny;
+  if (op == "between")
+    return kBetween;
+  return kUnknown;
+}
+
+void GpuControlList::AddFeature(
+    const std::string& feature_name, int feature_id) {
+  feature_map_[feature_name] = feature_id;
+}
+
+}  // namespace content
+