Remove OutputSurfaceClient external clip

cc/surfaces/display.h

 // Copyright 2014 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_SURFACES_DISPLAY_H_
 #define CC_SURFACES_DISPLAY_H_
 
 #include <memory>
 #include <vector>
 
@@ skipping 83 matching lines @@
       const gpu::TextureInUseResponses& responses) override;
   void ReclaimResources(const ReturnedResourceArray& resources) override;
   void DidLoseOutputSurface() override;
   void SetExternalTilePriorityConstraints(
       const gfx::Rect& viewport_rect,
       const gfx::Transform& transform) override;
   void SetMemoryPolicy(const ManagedMemoryPolicy& policy) override;
   void SetTreeActivationCallback(const base::Closure& callback) override;
   void OnDraw(const gfx::Transform& transform,
               const gfx::Rect& viewport,
-              const gfx::Rect& clip,
               bool resourceless_software_draw) override;
 
   // RendererClient implementation.
   void SetFullRootLayerDamage() override;
 
   // SurfaceDamageObserver implementation.
   void OnSurfaceDamaged(const SurfaceId& surface, bool* changed) override;
 
   void SetEnlargePassTextureAmountForTesting(
       const gfx::Size& enlarge_texture_amount) {
@@ skipping 35 matching lines @@
   SoftwareRenderer* software_renderer_ = nullptr;
   std::vector<ui::LatencyInfo> stored_latency_info_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(Display);
 };
 
 }  // namespace cc
 
 #endif  // CC_SURFACES_DISPLAY_H_