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

content/browser/accessibility/browser_accessibility.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_H_
 #define CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_H_
 
 #include <map>
 #include <utility>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/strings/string16.h"
 #include "build/build_config.h"
 #include "content/common/content_export.h"
 #include "third_party/WebKit/public/web/WebAXEnums.h"
 #include "ui/accessibility/ax_node_data.h"
 
 #if defined(OS_MACOSX) && __OBJC__
 @class BrowserAccessibilityCocoa;
 #endif
 
 namespace content {
 class BrowserAccessibilityManager;
 #if defined(OS_WIN)
 class BrowserAccessibilityWin;
-#elif defined(TOOLKIT_GTK)
-class BrowserAccessibilityGtk;
 #endif
 
 ////////////////////////////////////////////////////////////////////////////////
 //
 // BrowserAccessibility
 //
 // Class implementing the cross platform interface for the Browser-Renderer
 // communication of accessibility information, providing accessibility
 // to be used by screen readers and other assistive technology (AT).
 //
@@ skipping 138 matching lines @@
   int32 GetState() const { return data_.state; }
   const std::vector<std::pair<std::string, std::string> >& GetHtmlAttributes()
       const {
     return data_.html_attributes;
   }
 
 #if defined(OS_MACOSX) && __OBJC__
   BrowserAccessibilityCocoa* ToBrowserAccessibilityCocoa();
 #elif defined(OS_WIN)
   BrowserAccessibilityWin* ToBrowserAccessibilityWin();
-#elif defined(TOOLKIT_GTK)
-  BrowserAccessibilityGtk* ToBrowserAccessibilityGtk();
 #endif
 
   // Accessing accessibility attributes:
   //
   // There are dozens of possible attributes for an accessibility node,
   // but only a few tend to apply to any one object, so we store them
   // in sparse arrays of <attribute id, attribute value> pairs, organized
   // by type (bool, int, float, string, int list).
   //
   // There are three accessors for each type of attribute: one that returns
@@ skipping 105 matching lines @@
   // immediately return failure.
   bool instance_active_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(BrowserAccessibility);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_H_