Get the init gpu mode from when chrome starts instead of when settings page starts

If we open settings page, change gpu mode, open a new tab, close the original setting page.  Now on the new tab, go to settings page.

Without this CL: it didn't show the restart link (which is wrong)
With this CL: it shows.

BUG=173130
TEST=settings page (as described above)
Review URL: https://codereview.chromium.org/12438035

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@189949 0039d316-1c4b-4281-b951-d872f2087c98

3 files changed, 17 insertions, 5 deletions

diff --git a/chrome/browser/gpu/gpu_mode_manager.cc b/chrome/browser/gpu/gpu_mode_manager.cc
index 38ec835..f56cb76 100644
--- a/chrome/browser/gpu/gpu_mode_manager.cc
+++ b/chrome/browser/gpu/gpu_mode_manager.cc
@@ -17,7 +17,8 @@ void GpuModeManager::RegisterPrefs(PrefRegistrySimple* registry) {
       prefs::kHardwareAccelerationModeEnabled, true);
 }
 
-GpuModeManager::GpuModeManager() {
+GpuModeManager::GpuModeManager()
+    : initial_gpu_mode_pref_(true) {
   if (g_browser_process->local_state()) {  // Skip for unit tests
     pref_registrar_.Init(g_browser_process->local_state());
     // Do nothing when the pref changes. It takes effect after
@@ -26,7 +27,9 @@ GpuModeManager::GpuModeManager() {
         prefs::kHardwareAccelerationModeEnabled,
         base::Bind(&base::DoNothing));
 
-    if (!IsGpuModePrefEnabled()) {
+    initial_gpu_mode_pref_ = IsGpuModePrefEnabled();
+
+    if (!initial_gpu_mode_pref_) {
       content::GpuDataManager* gpu_data_manager =
           content::GpuDataManager::GetInstance();
       DCHECK(gpu_data_manager);
@@ -38,6 +41,10 @@ GpuModeManager::GpuModeManager() {
 GpuModeManager::~GpuModeManager() {
 }
 
+bool GpuModeManager::initial_gpu_mode_pref() const {
+  return initial_gpu_mode_pref_;
+}
+
 // static
 bool GpuModeManager::IsGpuModePrefEnabled() {
   PrefService* service = g_browser_process->local_state();
diff --git a/chrome/browser/gpu/gpu_mode_manager.h b/chrome/browser/gpu/gpu_mode_manager.h
index 872c6fd..8dd605b 100644
--- a/chrome/browser/gpu/gpu_mode_manager.h
+++ b/chrome/browser/gpu/gpu_mode_manager.h
@@ -16,11 +16,15 @@ class GpuModeManager {
   GpuModeManager();
   ~GpuModeManager();
 
-  static bool IsGpuModePrefEnabled();
+  bool initial_gpu_mode_pref() const;
 
  private:
+  static bool IsGpuModePrefEnabled();
+
   PrefChangeRegistrar pref_registrar_;
 
+  bool initial_gpu_mode_pref_;
+
   DISALLOW_COPY_AND_ASSIGN(GpuModeManager);
 };
 
diff --git a/chrome/browser/ui/webui/options/browser_options_handler.cc b/chrome/browser/ui/webui/options/browser_options_handler.cc
index 4757370..8c17095 100644
--- a/chrome/browser/ui/webui/options/browser_options_handler.cc
+++ b/chrome/browser/ui/webui/options/browser_options_handler.cc
@@ -495,8 +495,9 @@ void BrowserOptionsHandler::GetLocalizedValues(DictionaryValue* values) {
 #endif
 
 #if !defined(OS_CHROMEOS)
-  values->SetBoolean("gpuEnabledAtStart",
-                     GpuModeManager::IsGpuModePrefEnabled());
+  values->SetBoolean(
+      "gpuEnabledAtStart",
+      g_browser_process->gpu_mode_manager()->initial_gpu_mode_pref());
 #endif
 }