Remove DirectRenderer::disableScissorTest, always leave GL_SCISSOR_TEST enabled in GlRenderer

cc/direct_renderer.h

 // Copyright 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 CC_DIRECT_RENDERER_H_
 #define CC_DIRECT_RENDERER_H_
 
 #include "base/basictypes.h"
 #include "cc/cc_export.h"
 #include "cc/renderer.h"
@@ skipping 69 matching lines @@
     static gfx::Size renderPassTextureSize(const RenderPass*);
     static GLenum renderPassTextureFormat(const RenderPass*);
 
     void drawRenderPass(DrawingFrame&, const RenderPass*);
     bool useRenderPass(DrawingFrame&, const RenderPass*);
 
     virtual void bindFramebufferToOutputSurface(DrawingFrame&) = 0;
     virtual bool bindFramebufferToTexture(DrawingFrame&, const ScopedTexture*, const gfx::Rect& framebufferRect) = 0;
     virtual void setDrawViewportSize(const gfx::Size&) = 0;
     virtual void enableScissorTestRect(const gfx::Rect& scissorRect) = 0;
-    virtual void disableScissorTest() = 0;
     virtual void clearFramebuffer(DrawingFrame&) = 0;
     virtual void drawQuad(DrawingFrame&, const DrawQuad*) = 0;
     virtual void beginDrawingFrame(DrawingFrame&) = 0;
     virtual void finishDrawingFrame(DrawingFrame&) = 0;
     virtual bool flippedFramebuffer() const = 0;
 
     ScopedPtrHashMap<RenderPass::Id, CachedTexture> m_renderPassTextures;
     ResourceProvider* m_resourceProvider;
 
 private:
     DISALLOW_COPY_AND_ASSIGN(DirectRenderer);
 };
 
 }  // namespace cc
 
 #endif  // CC_DIRECT_RENDERER_H_