Tidy CPDF_RenderContext

- Remove unused Clear() method.
- Replace Create() with actual ctors.
- Avoid const casts.
- Protect members.
- Add missing const in adjacent code.

R=thestig@chromium.org

Review URL: https://codereview.chromium.org/1536623004 .

1 files changed, 1 insertions, 2 deletions

diff --git a/core/src/fpdfapi/fpdf_render/fpdf_render_pattern.cpp b/core/src/fpdfapi/fpdf_render/fpdf_render_pattern.cpp
index 9076b7ba20..718fa73009 100644
--- a/core/src/fpdfapi/fpdf_render/fpdf_render_pattern.cpp
+++ b/core/src/fpdfapi/fpdf_render/fpdf_render_pattern.cpp
@@ -988,8 +988,7 @@ static CFX_DIBitmap* DrawPatternBitmap(CPDF_Document* pDoc,
   }
   flags |= RENDER_FORCE_HALFTONE;
   options.m_Flags = flags;
-  CPDF_RenderContext context;
-  context.Create(pDoc, pCache, NULL);
+  CPDF_RenderContext context(pDoc, pCache);
   context.DrawObjectList(&bitmap_device, pPattern->m_pForm, &mtPattern2Bitmap,
                          &options);
   return pBitmap;