use SkClipOps where we can, legacyClip where we need to rework

content/renderer/pepper/pepper_graphics_2d_host.cc

 // 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.
 
 #include "content/renderer/pepper/pepper_graphics_2d_host.h"
 
 #include "base/bind.h"
 #include "base/debug/trace_event.h"
 #include "base/logging.h"
 #include "base/message_loop/message_loop.h"
@@ skipping 329 matching lines @@
   if (plugin_instance->IsFullPagePlugin()) {
     // When we're resizing a window with a full-frame plugin, the plugin may
     // not yet have bound a new device, which will leave parts of the
     // background exposed if the window is getting larger. We want this to
     // show white (typically less jarring) rather than black or uninitialized.
     // We don't do this for non-full-frame plugins since we specifically want
     // the page background to show through.
     SkAutoCanvasRestore auto_restore(canvas, true);
     SkRect image_data_rect =
         gfx::RectToSkRect(gfx::Rect(plugin_rect.origin(), image_size));
-    canvas->clipRect(image_data_rect, SkRegion::kDifference_Op);
+    canvas->clipRect(image_data_rect, kDifference_SkClipOp);
 
     SkPaint paint;
     paint.setXfermodeMode(SkXfermode::kSrc_Mode);
     paint.setColor(SK_ColorWHITE);
     canvas->drawRect(sk_invalidate_rect, paint);
   }
 
   SkBitmap image;
   // Copy to device independent bitmap when target canvas doesn't support
   // platform paint.
@@ skipping 454 matching lines @@
     gfx::Point inverse_scaled_point =
         gfx::ToFlooredPoint(gfx::ScalePoint(*delta, inverse_scale));
     if (original_delta != inverse_scaled_point)
       return false;
   }
 
   return true;
 }
 
 }  // namespace content