cc: Clean up max frames/swaps pending usage.

cc/output/output_surface.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_OUTPUT_OUTPUT_SURFACE_H_
 #define CC_OUTPUT_OUTPUT_SURFACE_H_
 
 #include <deque>
 
 #include "base/basictypes.h"
@@ skipping 27 matching lines @@
 
 // Represents the output surface for a compositor. The compositor owns
 // and manages its destruction. Its lifetime is:
 //   1. Created on the main thread by the LayerTreeHost through its client.
 //   2. Passed to the compositor thread and bound to a client via BindToClient.
 //      From here on, it will only be used on the compositor thread.
 //   3. If the 3D context is lost, then the compositor will delete the output
 //      surface (on the compositor thread) and go back to step 1.
 class CC_EXPORT OutputSurface : public base::trace_event::MemoryDumpProvider {
  public:
-  enum {
-    DEFAULT_MAX_FRAMES_PENDING = 2
-  };
-
   OutputSurface(const scoped_refptr<ContextProvider>& context_provider,
                 const scoped_refptr<ContextProvider>& worker_context_provider,
                 scoped_ptr<SoftwareOutputDevice> software_device);
   OutputSurface(const scoped_refptr<ContextProvider>& context_provider,
                 const scoped_refptr<ContextProvider>& worker_context_provider);
   explicit OutputSurface(
       const scoped_refptr<ContextProvider>& context_provider);
 
   explicit OutputSurface(scoped_ptr<SoftwareOutputDevice> software_device);
 
   OutputSurface(const scoped_refptr<ContextProvider>& context_provider,
                 scoped_ptr<SoftwareOutputDevice> software_device);
 
   ~OutputSurface() override;
 
   struct Capabilities {
     Capabilities()
         : delegated_rendering(false),
-          max_frames_pending(0),
+          max_frames_pending(1),
           adjust_deadline_for_parent(true),
           uses_default_gl_framebuffer(true),
           flipped_output_surface(false),
           can_force_reclaim_resources(false),
           delegated_sync_points_required(true) {}
     bool delegated_rendering;
     int max_frames_pending;
     // This doesn't handle the <webview> case, but once BeginFrame is
     // supported natively, we shouldn't need adjust_deadline_for_parent.
     bool adjust_deadline_for_parent;
@@ skipping 126 matching lines @@
   bool external_stencil_test_enabled_;
 
   base::WeakPtrFactory<OutputSurface> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(OutputSurface);
 };
 
 }  // namespace cc
 
 #endif  // CC_OUTPUT_OUTPUT_SURFACE_H_