Make gpu black list work again on Linux

content/browser/gpu/gpu_data_manager_impl_private.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_data_manager_impl_private.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
 #include "base/metrics/field_trial.h"
@@ skipping 466 matching lines @@
       !gpu_info_.gl_version.empty())
     return;
 
   gpu::GPUInfo gpu_info = gpu_info_;
 
   gpu_info.gl_vendor = gl_vendor;
   gpu_info.gl_renderer = gl_renderer;
   gpu_info.gl_version = gl_version;
 
   gpu::IdentifyActiveGPU(&gpu_info);
-  gpu::CollectDriverInfoGL(&gpu_info);
+
+  // Give a chance to IsEssentialGpuInfoAvailable() to return true. Useful
+  // to prevent launching the gpu process from SystemInfoHandler::GetInfo
+  // from DevToolsHttpHandler when running python browser tests.
+  gpu_info.context_info_state = gpu::CollectDriverInfoGL(&gpu_info);
 
   UpdateGpuInfo(gpu_info);
   UpdateGpuSwitchingManager(gpu_info);
   UpdatePreliminaryBlacklistedFeatures();
 }
 
 void GpuDataManagerImplPrivate::GetGLStrings(std::string* gl_vendor,
                                              std::string* gl_renderer,
                                              std::string* gl_version) {
   DCHECK(gl_vendor && gl_renderer && gl_version);
@@ skipping 25 matching lines @@
     gpu_info.gpu.vendor_id = 0xffff;
     gpu_info.gpu.device_id = 0xffff;
 
     // Also declare the driver_vendor to be osmesa to be able to specify
     // exceptions based on driver_vendor==osmesa for some blacklist rules.
     gpu_info.driver_vendor = gfx::kGLImplementationOSMesaName;
   } else {
     TRACE_EVENT0("startup",
       "GpuDataManagerImpl::Initialize:CollectBasicGraphicsInfo");
     gpu::CollectBasicGraphicsInfo(&gpu_info);
+
+    // Always active the testing gpu device if any.
+    uint32_t vendor_id = 0;
+    uint32_t device_id = 0;
+    gpu::ParseTestingIds(&vendor_id, &device_id);
+    gpu_info.gpu.active = gpu_info.gpu.vendor_id == vendor_id &&
+                          gpu_info.gpu.device_id == device_id;
   }
 #if defined(ARCH_CPU_X86_FAMILY)
   if (!gpu_info.gpu.vendor_id || !gpu_info.gpu.device_id) {
     gpu_info.context_info_state = gpu::kCollectInfoNonFatalFailure;
 #if defined(OS_WIN)
     gpu_info.dx_diagnostics_info_state = gpu::kCollectInfoNonFatalFailure;
 #endif  // OS_WIN
   }
 #endif  // ARCH_CPU_X86_FAMILY
 
@@ skipping 700 matching lines @@
   gpu_info_.context_info_state = gpu::kCollectInfoFatalFailure;
 #if defined(OS_WIN)
   gpu_info_.dx_diagnostics_info_state = gpu::kCollectInfoFatalFailure;
 #endif
   complete_gpu_info_already_requested_ = true;
   // Some observers might be waiting.
   NotifyGpuInfoUpdate();
 }
 
 }  // namespace content