Remove PixelStorei calls that are no longer necessary.

Source/platform/graphics/gpu/DrawingBuffer.cpp

 /*
  * Copyright (c) 2010, 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 492 matching lines @@
     context->waitSyncPoint(mailbox.syncPoint);
     Platform3DObject sourceTexture = context->createAndConsumeTextureCHROMIUM(GL_TEXTURE_2D, mailbox.name);
 
     GLboolean unpackPremultiplyAlphaNeeded = GL_FALSE;
     GLboolean unpackUnpremultiplyAlphaNeeded = GL_FALSE;
     if (m_actualAttributes.alpha && m_actualAttributes.premultipliedAlpha && !premultiplyAlpha)
         unpackUnpremultiplyAlphaNeeded = GL_TRUE;
     else if (m_actualAttributes.alpha && !m_actualAttributes.premultipliedAlpha && premultiplyAlpha)
         unpackPremultiplyAlphaNeeded = GL_TRUE;
 
-    context->pixelStorei(GC3D_UNPACK_UNPREMULTIPLY_ALPHA_CHROMIUM, unpackUnpremultiplyAlphaNeeded);
-    context->pixelStorei(GC3D_UNPACK_PREMULTIPLY_ALPHA_CHROMIUM, unpackPremultiplyAlphaNeeded);
-    context->pixelStorei(GC3D_UNPACK_FLIP_Y_CHROMIUM, flipY);
     context->copyTextureCHROMIUM(GL_TEXTURE_2D, sourceTexture, texture, internalFormat, destType, flipY, unpackPremultiplyAlphaNeeded, unpackUnpremultiplyAlphaNeeded);
-    context->pixelStorei(GC3D_UNPACK_FLIP_Y_CHROMIUM, GL_FALSE);
-    context->pixelStorei(GC3D_UNPACK_UNPREMULTIPLY_ALPHA_CHROMIUM, GL_FALSE);
-    context->pixelStorei(GC3D_UNPACK_PREMULTIPLY_ALPHA_CHROMIUM, GL_FALSE);
 
     context->deleteTexture(sourceTexture);
 
     context->flush();
     m_context->waitSyncPoint(context->insertSyncPoint());
 
     return true;
 }
 
 Platform3DObject DrawingBuffer::framebuffer() const
@@ skipping 483 matching lines @@
 void DrawingBuffer::deleteChromiumImageForTexture(TextureInfo* info)
 {
     if (info->imageId) {
         m_context->releaseTexImage2DCHROMIUM(GL_TEXTURE_2D, info->imageId);
         m_context->destroyImageCHROMIUM(info->imageId);
         info->imageId = 0;
     }
 }
 
 } // namespace blink