Add --gpu-no-context-lost commandline switch.

content/gpu/gpu_info_collector_linux.cc

 // Copyright (c) 2011 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/gpu/gpu_info_collector.h"
 
 #include <dlfcn.h>
 #include <vector>
 
+#include "base/command_line.h"
 #include "base/file_util.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/string_piece.h"
 #include "base/string_split.h"
 #include "base/string_tokenizer.h"
 #include "base/string_util.h"
 #include "ui/gfx/gl/gl_bindings.h"
 #include "ui/gfx/gl/gl_context.h"
 #include "ui/gfx/gl/gl_implementation.h"
+#include "ui/gfx/gl/gl_switches.h"
 
 namespace {
 
 // PciDevice and PciAccess are defined to access libpci functions.  Their
 // members match the corresponding structures defined by libpci in size up to
 // fields we may access.  For those members we don't use, their names are
 // defined as "fieldX", etc., or, left out if they are declared after the
 // members we care about in libpci.
 
 struct PciDevice {
@@ skipping 155 matching lines @@
   return 0;
 }
 
 }  // namespace anonymous
 
 namespace gpu_info_collector {
 
 bool CollectGraphicsInfo(GPUInfo* gpu_info) {
   DCHECK(gpu_info);
 
-  // TODO(zmo): need to consider the case where we are running on top of
-  // desktop GL and GL_ARB_robustness extension is available.
-  gpu_info->can_lose_context =
-      (gfx::GetGLImplementation() == gfx::kGLImplementationEGLGLES2);
+  if (CommandLine::ForCurrentProcess()->HasSwitch(
+          switches::kGpuNoContextLost)) {
+    gpu_info->can_lose_context = false;
+  } else {
+    // TODO(zmo): need to consider the case where we are running on top
+    // of desktop GL and GL_ARB_robustness extension is available.
+    gpu_info->can_lose_context =
+        (gfx::GetGLImplementation() == gfx::kGLImplementationEGLGLES2);
+  }
+
   gpu_info->finalized = true;
   return CollectGraphicsInfoGL(gpu_info);
 }
 
 bool CollectPreliminaryGraphicsInfo(GPUInfo* gpu_info) {
   DCHECK(gpu_info);
 
   bool rt = true;
   if (!CollectVideoCardInfo(gpu_info))
     rt = false;
@@ skipping 126 matching lines @@
     return false;
   if (pos != std::string::npos)
     driver_version = driver_version.substr(0, pos);
 
   gpu_info->driver_vendor = pieces[1];
   gpu_info->driver_version = driver_version;
   return true;
 }
 
 }  // namespace gpu_info_collector