Use GpuPreferences to avoid directly accessing switches in gpu related code

content/common/gpu/gpu_command_buffer_stub.cc

Index: content/common/gpu/gpu_command_buffer_stub.cc
diff --git a/content/common/gpu/gpu_command_buffer_stub.cc b/content/common/gpu/gpu_command_buffer_stub.cc
index eae3cd4fcf62ca667a4e9bd725705f977eaa80d4..c0855148b2c5f110635f14bef9d4fb40d6f276cf 100644
--- a/content/common/gpu/gpu_command_buffer_stub.cc
+++ b/content/common/gpu/gpu_command_buffer_stub.cc
@@ -216,8 +216,9 @@ GpuCommandBufferStub::GpuCommandBufferStub(
            attrib_parser.bind_generates_resource);
   } else {
     context_group_ = new gpu::gles2::ContextGroup(
-        mailbox_manager, new GpuCommandBufferMemoryTracker(
-                             channel, command_buffer_id_.GetUnsafeValue()),
+        channel_->gpu_channel_manager()->gpu_preferences(), mailbox_manager,
+        new GpuCommandBufferMemoryTracker(channel,
+                                          command_buffer_id_.GetUnsafeValue()),
         channel_->gpu_channel_manager()->shader_translator_cache(),
         channel_->gpu_channel_manager()->framebuffer_completeness_cache(), NULL,
         subscription_ref_set, pending_valuebuffer_state,
@@ -621,8 +622,8 @@ void GpuCommandBufferStub::OnInitialize(
     return;
   }
 
-  if (base::CommandLine::ForCurrentProcess()->HasSwitch(
-          switches::kEnableGPUServiceLogging)) {
+  if (channel_->gpu_channel_manager()->
+      gpu_preferences().enable_gpu_service_logging) {
     decoder_->set_log_commands(true);
   }
 
@@ -1129,10 +1130,8 @@ bool GpuCommandBufferStub::CheckContextLost() {
     // Work around issues with recovery by allowing a new GPU process to launch.
     if ((was_lost_by_robustness ||
          context_group_->feature_info()->workarounds().exit_on_context_lost) &&
-        !base::CommandLine::ForCurrentProcess()->HasSwitch(
-            switches::kSingleProcess) &&
-        !base::CommandLine::ForCurrentProcess()->HasSwitch(
-            switches::kInProcessGPU)) {
+        !channel_->gpu_channel_manager()->gpu_preferences().single_process &&
+        !channel_->gpu_channel_manager()->gpu_preferences().in_process_gpu) {
       LOG(ERROR) << "Exiting GPU process because some drivers cannot recover"
                  << " from problems.";
       // Signal the message loop to quit to shut down other threads