Remove PixelStorei calls that are no longer necessary.

Source/platform/graphics/ImageBuffer.cpp

Index: Source/platform/graphics/ImageBuffer.cpp
diff --git a/Source/platform/graphics/ImageBuffer.cpp b/Source/platform/graphics/ImageBuffer.cpp
index 4db922e11d60bdb88d26bb1511372094572f2121..e1e626a8b72539b2a32fc82078cea613a0e4c017 100644
--- a/Source/platform/graphics/ImageBuffer.cpp
+++ b/Source/platform/graphics/ImageBuffer.cpp
@@ -208,15 +208,9 @@ bool ImageBuffer::copyToPlatformTexture(WebGraphicsContext3D* context, Platform3
     Platform3DObject sourceTexture = context->createAndConsumeTextureCHROMIUM(GL_TEXTURE_2D, mailbox->name);
 
     // The canvas is stored in a premultiplied format, so unpremultiply if necessary.
-    context->pixelStorei(GC3D_UNPACK_UNPREMULTIPLY_ALPHA_CHROMIUM, !premultiplyAlpha);
-
     // The canvas is stored in an inverted position, so the flip semantics are reversed.
-    context->pixelStorei(GC3D_UNPACK_FLIP_Y_CHROMIUM, !flipY);
     context->copyTextureCHROMIUM(GL_TEXTURE_2D, sourceTexture, texture, internalFormat, destType, flipY ? GL_FALSE : GL_TRUE, GL_FALSE, premultiplyAlpha ? GL_FALSE : GL_TRUE);
 
-    context->pixelStorei(GC3D_UNPACK_FLIP_Y_CHROMIUM, false);
-    context->pixelStorei(GC3D_UNPACK_UNPREMULTIPLY_ALPHA_CHROMIUM, false);
-
     context->deleteTexture(sourceTexture);
 
     context->flush();