Add DriverBugWorkaroundsInGpuProcessPage to gpu_process_test.py

content/browser/gpu/gpu_data_manager_impl_private.cc

Index: content/browser/gpu/gpu_data_manager_impl_private.cc
diff --git a/content/browser/gpu/gpu_data_manager_impl_private.cc b/content/browser/gpu/gpu_data_manager_impl_private.cc
index ec1776cd4b31b9b23bab96e8e19a17ef3d304154..acc26c4f78030668a08eb05a86f133659edb784b 100644
--- a/content/browser/gpu/gpu_data_manager_impl_private.cc
+++ b/content/browser/gpu/gpu_data_manager_impl_private.cc
@@ -10,6 +10,7 @@
 #include "base/metrics/field_trial.h"
 #include "base/metrics/histogram.h"
 #include "base/metrics/sparse_histogram.h"
+#include "base/stl_util.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/stringprintf.h"
 #include "base/sys_info.h"
@@ -570,6 +571,8 @@ void GpuDataManagerImplPrivate::UpdateGpuInfoHelper() {
     UpdateBlacklistedFeatures(features);
   }
   if (gpu_driver_bug_list_) {
+    // XXX Maybe just do gpu_driver_bugs_ = gpu_info_.driver_bugs_workarounds
+    // instead of recomputing.
     gpu_driver_bugs_ = gpu_driver_bug_list_->MakeDecision(
         gpu::GpuControlList::kOsAny, std::string(), gpu_info_);
 
@@ -579,6 +582,16 @@ void GpuDataManagerImplPrivate::UpdateGpuInfoHelper() {
   gpu::GpuDriverBugList::AppendWorkaroundsFromCommandLine(
       &gpu_driver_bugs_, *base::CommandLine::ForCurrentProcess());
 
+  // XXX Follwing block is not necesarry if above XXX is applied.
+  if (!gpu_info_.driver_bugs_workarounds.empty()) {
+    std::set<int> diff_gpu_driver_bugs = base::STLSetDifference<std::set<int>>(
+        gpu_driver_bugs_, gpu_info_.driver_bugs_workarounds);
+    if (!diff_gpu_driver_bugs.empty()) {
+      LOG(ERROR) << "gpu driver bug workarounds not in sync, force it";
+      gpu_driver_bugs_ = gpu_info_.driver_bugs_workarounds;
+    }
+  }
+
   // We have to update GpuFeatureType before notify all the observers.
   NotifyGpuInfoUpdate();
 }