Make stream captures work on canvases that are not in the DOM.

third_party/WebKit/Source/platform/graphics/Canvas2DLayerBridgeTest.cpp

Index: third_party/WebKit/Source/platform/graphics/Canvas2DLayerBridgeTest.cpp
diff --git a/third_party/WebKit/Source/platform/graphics/Canvas2DLayerBridgeTest.cpp b/third_party/WebKit/Source/platform/graphics/Canvas2DLayerBridgeTest.cpp
index 2dfbf122efd6e8bf94e0e28529280a43fbb5ecfa..088b9f1bc401838abadb47edc01bcf18d0cbf238 100644
--- a/third_party/WebKit/Source/platform/graphics/Canvas2DLayerBridgeTest.cpp
+++ b/third_party/WebKit/Source/platform/graphics/Canvas2DLayerBridgeTest.cpp
@@ -236,9 +236,7 @@ class Canvas2DLayerBridgeTest : public Test {
         Canvas2DLayerBridge::ForceAccelerationForTesting, nullptr,
         kN32_SkColorType)));
 
-    // TODO(junov): The PrepareTextureMailbox() method will fail a DCHECK if we
-    // don't do this before calling it the first time when the context is lost.
-    bridge->prepareSurfaceForPaintingIfNeeded();
+    EXPECT_TRUE(bridge->isAccelerated());
 
     // When the context is lost we are not sure if we should still be producing
     // GL frames for the compositor or not, so fail to generate frames.
@@ -259,10 +257,8 @@ class Canvas2DLayerBridgeTest : public Test {
         Canvas2DLayerBridge::ForceAccelerationForTesting, nullptr,
         kN32_SkColorType)));
 
-    // TODO(junov): The PrepareTextureMailbox() method will fail a DCHECK if we
-    // don't do this before calling it the first time when the context is lost.
-    bridge->prepareSurfaceForPaintingIfNeeded();
-
+    bridge->getOrCreateSurface();
+    EXPECT_TRUE(bridge->checkSurfaceValid());
     // When the context is lost we are not sure if we should still be producing
     // GL frames for the compositor or not, so fail to generate frames.
     gl.setIsContextLost(true);
@@ -414,7 +410,7 @@ void runCreateBridgeTask(Canvas2DLayerBridgePtr* bridgePtr,
                            Canvas2DLayerBridge::EnableAcceleration);
   // draw+flush to trigger the creation of a GPU surface
   (*bridgePtr)->didDraw(FloatRect(0, 0, 1, 1));
-  (*bridgePtr)->finalizeFrame(FloatRect(0, 0, 1, 1));
+  (*bridgePtr)->finalizeFrame();
   (*bridgePtr)->flush();
   doneEvent->signal();
 }
@@ -673,7 +669,7 @@ TEST_F(Canvas2DLayerBridgeTest,
 
 void runRenderingTask(Canvas2DLayerBridge* bridge, WaitableEvent* doneEvent) {
   bridge->didDraw(FloatRect(0, 0, 1, 1));
-  bridge->finalizeFrame(FloatRect(0, 0, 1, 1));
+  bridge->finalizeFrame();
   bridge->flush();
   doneEvent->signal();
 }