Cache image data objects.

ppapi/tests/test_graphics_2d.h

 // 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.
 
 #ifndef PPAPI_TESTS_TEST_GRAPHICS_2D_H_
 #define PPAPI_TESTS_TEST_GRAPHICS_2D_H_
 
 #include <string>
 
 #include "ppapi/c/pp_stdint.h"
@@ skipping 51 matching lines @@
   bool IsSquareInDC(const pp::Graphics2D& dc, uint32_t background_color,
                     const pp::Rect& square, uint32_t square_color) const;
 
   // Validates that the given device context is filled with the given color.
   bool IsDCUniformColor(const pp::Graphics2D& dc, uint32_t color) const;
 
   // Issues a flush on the given device context and blocks until the flush
   // has issued its callback. Returns true on success.
   bool FlushAndWaitForDone(pp::Graphics2D* context);
 
+  // Creates an image and replaces the contents of the Graphics2D with the
+  // image, waiting for completion. This returns the resource ID of the image
+  // data we created. This image data will be released by the time the call
+  // completes, but it can be used for comparisons later.
+  //
+  // Returns 0 on failure.
+  PP_Resource ReplaceContentsAndReturnID(pp::Graphics2D* dc,
+                                         const pp::Size& size);
+
   std::string TestInvalidResource();
   std::string TestInvalidSize();
   std::string TestHumongous();
   std::string TestInitToZero();
   std::string TestDescribe();
   std::string TestPaint();
   std::string TestScroll();
   std::string TestReplace();
   std::string TestFlush();
   std::string TestDev();
+  std::string TestReplaceContentsCaching();
 
   // Used by the tests that access the C API directly.
   const PPB_Graphics2D* graphics_2d_interface_;
   const PPB_ImageData* image_data_interface_;
 };
 
 #endif  // PPAPI_TESTS_TEST_GRAPHICS_2D_H_