Remove PrefServiceSimple, replacing it with PrefService and PrefRegistrySimple.

chrome/browser/gpu/gl_string_manager.cc

Index: chrome/browser/gpu/gl_string_manager.cc
diff --git a/chrome/browser/gpu/gl_string_manager.cc b/chrome/browser/gpu/gl_string_manager.cc
index a9216f5f97286e1eaaf3fc3571db932a368014fd..51c7040ea7a459bcfa5871d0392fe281130a7d32 100644
--- a/chrome/browser/gpu/gl_string_manager.cc
+++ b/chrome/browser/gpu/gl_string_manager.cc
@@ -5,6 +5,7 @@
 #include "chrome/browser/gpu/gl_string_manager.h"
 
 #include "chrome/browser/browser_process.h"
+#include "chrome/browser/prefs/pref_registrar_simple.h"
 #include "chrome/browser/prefs/pref_service.h"
 #include "chrome/common/pref_names.h"
 #include "content/public/browser/gpu_data_manager.h"
@@ -21,14 +22,16 @@ void GLStringManager::Initialize() {
   // We never remove this observer from GpuDataManager.
   content::GpuDataManager::GetInstance()->AddObserver(this);
 
-  PrefServiceSimple* local_state = g_browser_process->local_state();
+  PrefService* local_state = g_browser_process->local_state();
   if (!local_state)
     return;
 
   // TODO(joi): This should happen via browser_prefs::RegisterLocalState().
-  local_state->RegisterStringPref(prefs::kGLVendorString, gl_vendor_);
-  local_state->RegisterStringPref(prefs::kGLRendererString, gl_renderer_);
-  local_state->RegisterStringPref(prefs::kGLVersionString, gl_version_);
+  PrefRegistrarSimple registrar(local_state
+);
+  registrar.RegisterStringPref(prefs::kGLVendorString, gl_vendor_);
+  registrar.RegisterStringPref(prefs::kGLRendererString, gl_renderer_);
+  registrar.RegisterStringPref(prefs::kGLVersionString, gl_version_);
 
   gl_vendor_ = local_state->GetString(prefs::kGLVendorString);
   gl_renderer_ = local_state->GetString(prefs::kGLRendererString);