Revert of Cache the current WebPreferences on RenderViewHostImpl.

chrome/browser/ui/prefs/prefs_tab_helper.cc

Index: chrome/browser/ui/prefs/prefs_tab_helper.cc
diff --git a/chrome/browser/ui/prefs/prefs_tab_helper.cc b/chrome/browser/ui/prefs/prefs_tab_helper.cc
index bc9b08af1b39b9ab5acdbb53e1eedb79912db184..0079bf9171b3817074b91aa566c0d259aaa4055e 100644
--- a/chrome/browser/ui/prefs/prefs_tab_helper.cc
+++ b/chrome/browser/ui/prefs/prefs_tab_helper.cc
@@ -49,31 +49,23 @@
 // The list of prefs we want to observe.
 const char* kPrefsToObserve[] = {
   prefs::kDefaultCharset,
-  prefs::kDisable3DAPIs,
-  prefs::kEnableHyperlinkAuditing,
   prefs::kWebKitAllowDisplayingInsecureContent,
   prefs::kWebKitAllowRunningInsecureContent,
   prefs::kWebKitDefaultFixedFontSize,
   prefs::kWebKitDefaultFontSize,
-  prefs::kWebKitDomPasteEnabled,
 #if defined(OS_ANDROID)
   prefs::kWebKitFontScaleFactor,
   prefs::kWebKitForceEnableZoom,
   prefs::kWebKitPasswordEchoEnabled,
 #endif
-  prefs::kWebKitInspectorSettings,
-  prefs::kWebKitJavascriptCanOpenWindowsAutomatically,
   prefs::kWebKitJavascriptEnabled,
   prefs::kWebKitJavaEnabled,
   prefs::kWebKitLoadsImagesAutomatically,
   prefs::kWebKitMinimumFontSize,
   prefs::kWebKitMinimumLogicalFontSize,
   prefs::kWebKitPluginsEnabled,
-  prefs::kWebKitShrinksStandaloneImagesToFit,
   prefs::kWebkitTabsToLinks,
-  prefs::kWebKitTextAreasAreResizable,
-  prefs::kWebKitUsesUniversalDetector,
-  prefs::kWebKitWebSecurityEnabled,
+  prefs::kWebKitUsesUniversalDetector
 };
 
 const int kPrefsToObserveLength = arraysize(kPrefsToObserve);
@@ -120,7 +112,6 @@
     }
   }
 }
-#endif  // !defined(OS_ANDROID)
 
 // Registers |obs| to observe per-script font prefs under the path |map_name|.
 // On android, there's no exposed way to change these prefs, so we can save
@@ -137,6 +128,7 @@
     registrar->Add(pref_name.c_str(), obs);
   }
 }
+#endif  // !defined(OS_ANDROID)
 
 #if defined(OS_WIN)
 // On Windows with antialising we want to use an alternate fixed font like
@@ -334,9 +326,12 @@
         &PrefsTabHelper::OnWebPrefChanged, base::Unretained(this));
     for (int i = 0; i < kPrefsToObserveLength; ++i) {
       const char* pref_name = kPrefsToObserve[i];
+      DCHECK(std::string(pref_name) == prefs::kDefaultCharset ||
+             StartsWithASCII(pref_name, "webkit.webprefs.", true));
       pref_change_registrar_.Add(pref_name, webkit_callback);
     }
 
+#if !defined(OS_ANDROID)
     RegisterFontFamilyMapObserver(&pref_change_registrar_,
                                   prefs::kWebKitStandardFontFamilyMap,
                                   webkit_callback);
@@ -358,6 +353,7 @@
     RegisterFontFamilyMapObserver(&pref_change_registrar_,
                                   prefs::kWebKitPictographFontFamilyMap,
                                   webkit_callback);
+#endif  // !defined(OS_ANDROID)
   }
 
   renderer_preferences_util::UpdateFromSystemSettings(
@@ -580,7 +576,7 @@
   return Profile::FromBrowserContext(web_contents_->GetBrowserContext());
 }
 
-void PrefsTabHelper::OnFontFamilyPrefChanged(const std::string& pref_name) {
+void PrefsTabHelper::OnWebPrefChanged(const std::string& pref_name) {
   // When a font family pref's value goes from non-empty to the empty string, we
   // must add it to the usual WebPreferences struct passed to the renderer.
   //
@@ -608,12 +604,6 @@
       return;
     }
   }
-}
-
-void PrefsTabHelper::OnWebPrefChanged(const std::string& pref_name) {
-#if !defined(OS_ANDROID)
-  OnFontFamilyPrefChanged(pref_name);
-#endif
-
-  web_contents_->GetRenderViewHost()->OnWebkitPreferencesChanged();
-}
+
+  UpdateWebPreferences();
+}