Avoid GPU readback in tex(Sub)Image2D(ImageBitmap)

third_party/WebKit/Source/modules/webgl/WebGL2RenderingContextBase.cpp

 // Copyright 2015 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 "modules/webgl/WebGL2RenderingContextBase.h"
 
 #include "bindings/modules/v8/WebGLAny.h"
 #include "core/frame/ImageBitmap.h"
 #include "core/html/HTMLCanvasElement.h"
 #include "core/html/HTMLImageElement.h"
@@ skipping 443 matching lines @@
                 break;
             default:
                 synthesizeGLError(GL_INVALID_ENUM, functionName, "invalid attachment");
                 return false;
             }
         }
     }
     return true;
 }
 
-bool WebGL2RenderingContextBase::canUseTexImageCanvasByGPU(GLint internalformat, GLenum type)
+bool WebGL2RenderingContextBase::canUseTexImageByGPU(TexImageFunctionID functionID, GLint internalformat, GLenum type)
 {
     switch (internalformat) {
     case GL_RGB565:
     case GL_RGBA4:
     case GL_RGB5_A1:
         // FIXME: ES3 limitation that CopyTexImage with sized internalformat,
         // component sizes have to match the source color format.
         return false;
     default:
         break;
     }
-    return WebGLRenderingContextBase::canUseTexImageCanvasByGPU(internalformat, type);
+    return WebGLRenderingContextBase::canUseTexImageByGPU(functionID, internalformat, type);
 }
 
 void WebGL2RenderingContextBase::invalidateFramebuffer(GLenum target, const Vector<GLenum>& attachments)
 {
     if (isContextLost())
         return;
 
     Vector<GLenum> translatedAttachments = attachments;
     if (!checkAndTranslateAttachments("invalidateFramebuffer", target, translatedAttachments))
         return;
@@ skipping 2882 matching lines @@
     params.skipPixels = m_unpackSkipPixels;
     params.skipRows = m_unpackSkipRows;
     if (dimension == Tex3D) {
         params.imageHeight = m_unpackImageHeight;
         params.skipImages = m_unpackSkipImages;
     }
     return params;
 }
 
 } // namespace blink