Do not disable deferral on Canvas for texture drawImage

TBR=juanmihd

Bug: 970340
Change-Id: I081c7b80551137756908f59842ae80cd23a74fc4
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1643669Reviewed-by: Fernando Serboncini <fserb@chromium.org>
Commit-Queue: Fernando Serboncini <fserb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#666377}

third_party/blink/renderer/modules/canvas/canvas2d/base_rendering_context_2d.cc

@@ -1215,8 +1215,6 @@ void BaseRenderingContext2D::drawImage(ScriptState* script_state,
   DisableDeferralReason reason = kDisableDeferralReasonUnknown;
   if (ShouldDisableDeferral(image_source, &reason))
     DisableDeferral(reason);
-  else if (image->IsTextureBacked())
-    DisableDeferral(kDisableDeferralDrawImageWithTextureBackedSourceImage);
 
   ValidateStateStack();
 

third_party/blink/renderer/platform/graphics/graphics_types.h

@@ -132,7 +132,6 @@ enum DisableDeferralReason {
   kDisableDeferralReasonUsingTextureBackedPattern = 2,
   kDisableDeferralReasonDrawImageOfVideo = 3,
   kDisableDeferralReasonSubPixelTextAntiAliasingSupport = 5,
-  kDisableDeferralDrawImageWithTextureBackedSourceImage = 6,
   kDisableDeferralReasonLowEndDevice = 7,
   kDisableDeferralReasonCount,
 };