Revert of Remove create/delete methods from WebGraphicsContext3D.

third_party/WebKit/Source/modules/webgl/WebGLDrawBuffers.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 83 matching lines @@
                 return;
             }
         }
         scoped.context()->m_framebufferBinding->drawBuffers(buffers);
     }
 }
 
 // static
 bool WebGLDrawBuffers::satisfiesWebGLRequirements(WebGLRenderingContextBase* webglContext)
 {
+    WebGraphicsContext3D* context = webglContext->webContext();
     gpu::gles2::GLES2Interface* gl = webglContext->contextGL();
     Extensions3DUtil* extensionsUtil = webglContext->extensionsUtil();
 
     // This is called after we make sure GL_EXT_draw_buffers is supported.
     GLint maxDrawBuffers = 0;
     GLint maxColorAttachments = 0;
     gl->GetIntegerv(GL_MAX_DRAW_BUFFERS_EXT, &maxDrawBuffers);
     gl->GetIntegerv(GL_MAX_COLOR_ATTACHMENTS_EXT, &maxColorAttachments);
     if (maxDrawBuffers < 4 || maxColorAttachments < 4)
         return false;
 
-    GLuint fbo;
-    gl->GenFramebuffers(1, &fbo);
+    Platform3DObject fbo = context->createFramebuffer();
     gl->BindFramebuffer(GL_FRAMEBUFFER, fbo);
 
     const unsigned char* buffer = 0; // Chromium doesn't allow init data for depth/stencil tetxures.
     bool supportsDepth = (extensionsUtil->supportsExtension("GL_CHROMIUM_depth_texture")
         || extensionsUtil->supportsExtension("GL_OES_depth_texture")
         || extensionsUtil->supportsExtension("GL_ARB_depth_texture"));
     bool supportsDepthStencil = (extensionsUtil->supportsExtension("GL_EXT_packed_depth_stencil")
         || extensionsUtil->supportsExtension("GL_OES_packed_depth_stencil"));
-    GLuint depthStencil = 0;
+    Platform3DObject depthStencil = 0;
     if (supportsDepthStencil) {
-        gl->GenTextures(1, &depthStencil);
+        depthStencil = context->createTexture();
         gl->BindTexture(GL_TEXTURE_2D, depthStencil);
         gl->TexImage2D(GL_TEXTURE_2D, 0, GL_DEPTH_STENCIL_OES, 1, 1, 0, GL_DEPTH_STENCIL_OES, GL_UNSIGNED_INT_24_8_OES, buffer);
     }
-    GLuint depth = 0;
+    Platform3DObject depth = 0;
     if (supportsDepth) {
-        gl->GenTextures(1, &depth);
+        depth = context->createTexture();
         gl->BindTexture(GL_TEXTURE_2D, depth);
         gl->TexImage2D(GL_TEXTURE_2D, 0, GL_DEPTH_COMPONENT, 1, 1, 0, GL_DEPTH_COMPONENT, GL_UNSIGNED_INT, buffer);
     }
 
     Vector<Platform3DObject> colors;
     bool ok = true;
     GLint maxAllowedBuffers = std::min(maxDrawBuffers, maxColorAttachments);
     for (GLint i = 0; i < maxAllowedBuffers; ++i) {
-        GLuint color;
-        gl->GenTextures(1, &color);
+        Platform3DObject color = context->createTexture();
         colors.append(color);
         gl->BindTexture(GL_TEXTURE_2D, color);
         gl->TexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 1, 1, 0, GL_RGBA, GL_UNSIGNED_BYTE, buffer);
         gl->FramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0 + i, GL_TEXTURE_2D, color, 0);
         if (gl->CheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE) {
             ok = false;
             break;
         }
         if (supportsDepth) {
             gl->FramebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_TEXTURE_2D, depth, 0);
             if (gl->CheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE) {
                 ok = false;
                 break;
             }
             gl->FramebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_TEXTURE_2D, 0, 0);
         }
         if (supportsDepthStencil) {
             gl->FramebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_TEXTURE_2D, depthStencil, 0);
             gl->FramebufferTexture2D(GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT, GL_TEXTURE_2D, depthStencil, 0);
             if (gl->CheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE) {
                 ok = false;
                 break;
             }
             gl->FramebufferTexture2D(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_TEXTURE_2D, 0, 0);
             gl->FramebufferTexture2D(GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT, GL_TEXTURE_2D, 0, 0);
         }
     }
 
     webglContext->restoreCurrentFramebuffer();
-    gl->DeleteFramebuffers(1, &fbo);
+    context->deleteFramebuffer(fbo);
     webglContext->restoreCurrentTexture2D();
     if (supportsDepth)
-        gl->DeleteTextures(1, &depth);
+        context->deleteTexture(depth);
     if (supportsDepthStencil)
-        gl->DeleteTextures(1, &depthStencil);
-    gl->DeleteTextures(colors.size(), colors.data());
+        context->deleteTexture(depthStencil);
+    for (size_t i = 0; i < colors.size(); ++i)
+        context->deleteTexture(colors[i]);
     return ok;
 }
 
 } // namespace blink