Revert of Remove create/delete methods from WebGraphicsContext3D.

third_party/WebKit/Source/platform/graphics/ImageBuffer.cpp

 /*
  * Copyright (c) 2008, Google Inc. All rights reserved.
  * Copyright (C) 2009 Dirk Schulze <krit@webkit.org>
  * Copyright (C) 2010 Torch Mobile (Beijing) Co. Ltd. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
@@ skipping 206 matching lines @@
     sharedGL->GenSyncTokenCHROMIUM(sharedFenceSync, mailbox->syncToken);
     mailbox->validSyncToken = true;
     gl->WaitSyncTokenCHROMIUM(mailbox->syncToken);
 
     Platform3DObject sourceTexture = gl->CreateAndConsumeTextureCHROMIUM(textureInfo->fTarget, mailbox->name);
 
     // The canvas is stored in a premultiplied format, so unpremultiply if necessary.
     // The canvas is stored in an inverted position, so the flip semantics are reversed.
     gl->CopyTextureCHROMIUM(sourceTexture, texture, internalFormat, destType, flipY ? GL_FALSE : GL_TRUE, GL_FALSE, premultiplyAlpha ? GL_FALSE : GL_TRUE);
 
-    gl->DeleteTextures(1, &sourceTexture);
+    context->deleteTexture(sourceTexture);
 
     const GLuint64 contextFenceSync = gl->InsertFenceSyncCHROMIUM();
 
     gl->Flush();
 
     WGC3Dbyte syncToken[24];
     gl->GenSyncTokenCHROMIUM(contextFenceSync, syncToken);
     sharedGL->WaitSyncTokenCHROMIUM(syncToken);
 
     // Undo grContext texture binding changes introduced in this function
@@ skipping 166 matching lines @@
     ASSERT(MIMETypeRegistry::isSupportedImageMIMETypeForEncoding(mimeType));
 
     Vector<unsigned char> result;
     if (!encodeImage(mimeType, quality, &result))
         return "data:,";
 
     return "data:" + mimeType + ";base64," + base64Encode(result);
 }
 
 } // namespace blink