Remove a bunch of TOOLKIT_GTK in content/ and gpu/, as well as NPAPI plugins on linux

content/shell/browser/shell.h

Index: content/shell/browser/shell.h
diff --git a/content/shell/browser/shell.h b/content/shell/browser/shell.h
index 4acffff46eabad7d207214a1c6908e385f605b65..8125262f9a918cedfd132bea375a14ea0831ef66 100644
--- a/content/shell/browser/shell.h
+++ b/content/shell/browser/shell.h
@@ -212,24 +212,6 @@ class Shell : public WebContentsDelegate,
   void InnerShowDevTools(const std::string& settings);
   void OnDevToolsWebContentsDestroyed();
 
-#if defined(TOOLKIT_GTK)
-  CHROMEGTK_CALLBACK_0(Shell, void, OnBackButtonClicked);
-  CHROMEGTK_CALLBACK_0(Shell, void, OnForwardButtonClicked);
-  CHROMEGTK_CALLBACK_0(Shell, void, OnReloadButtonClicked);
-  CHROMEGTK_CALLBACK_0(Shell, void, OnStopButtonClicked);
-  CHROMEGTK_CALLBACK_0(Shell, void, OnURLEntryActivate);
-  CHROMEGTK_CALLBACK_0(Shell, gboolean, OnWindowDestroyed);
-
-  CHROMEG_CALLBACK_3(Shell, gboolean, OnCloseWindowKeyPressed, GtkAccelGroup*,
-                     GObject*, guint, GdkModifierType);
-  CHROMEG_CALLBACK_3(Shell, gboolean, OnNewWindowKeyPressed, GtkAccelGroup*,
-                     GObject*, guint, GdkModifierType);
-  CHROMEG_CALLBACK_3(Shell, gboolean, OnHighlightURLView, GtkAccelGroup*,
-                     GObject*, guint, GdkModifierType);
-  CHROMEG_CALLBACK_3(Shell, gboolean, OnReloadKeyPressed, GtkAccelGroup*,
-                     GObject*, guint, GdkModifierType);
-#endif
-
   scoped_ptr<ShellJavaScriptDialogManager> dialog_manager_;
 
   scoped_ptr<WebContents> web_contents_;
@@ -244,19 +226,7 @@ class Shell : public WebContentsDelegate,
 
   gfx::Size content_size_;
 
-#if defined(TOOLKIT_GTK)
-  GtkWidget* vbox_;
-
-  GtkToolItem* back_button_;
-  GtkToolItem* forward_button_;
-  GtkToolItem* reload_button_;
-  GtkToolItem* stop_button_;
-
-  GtkWidget* spinner_;
-  GtkToolItem* spinner_item_;
-
-  int ui_elements_height_; // height of menubar, toolbar, etc.
-#elif defined(OS_ANDROID)
+#if defined(OS_ANDROID)
   base::android::ScopedJavaGlobalRef<jobject> java_object_;
 #elif defined(USE_AURA)
 #if defined(OS_CHROMEOS)