Streamline the presentation of ImageBitmapRenderingContext

third_party/WebKit/Source/platform/graphics/Canvas2DLayerBridge.cpp

Index: third_party/WebKit/Source/platform/graphics/Canvas2DLayerBridge.cpp
diff --git a/third_party/WebKit/Source/platform/graphics/Canvas2DLayerBridge.cpp b/third_party/WebKit/Source/platform/graphics/Canvas2DLayerBridge.cpp
index 7129cc32c4f599cccddae76d3a5b4cf4b94165d7..9b85b45ee3b5994aff2ed8f58071f59780141ac2 100644
--- a/third_party/WebKit/Source/platform/graphics/Canvas2DLayerBridge.cpp
+++ b/third_party/WebKit/Source/platform/graphics/Canvas2DLayerBridge.cpp
@@ -974,8 +974,9 @@ void Canvas2DLayerBridge::mailboxReleased(const gpu::Mailbox& mailbox,
 #if USE_IOSURFACE_FOR_2D_CANVAS
       DCHECK(!releasedMailboxInfo->m_imageInfo);
 #endif  // USE_IOSURFACE_FOR_2D_CANVAS
-      if (syncToken.HasData()) {
-        contextGL()->WaitSyncTokenCHROMIUM(syncToken.GetConstData());
+      gpu::gles2::GLES2Interface* gl = contextGL();
+      if (syncToken.HasData() && gl) {
+        gl->WaitSyncTokenCHROMIUM(syncToken.GetConstData());
       }
       GrTexture* texture = releasedMailboxInfo->m_image->getTexture();
       if (texture) {
@@ -985,7 +986,6 @@ void Canvas2DLayerBridge::mailboxReleased(const gpu::Mailbox& mailbox,
           texture->textureParamsModified();
           // Break the mailbox association to avoid leaking mailboxes every time
           // skia recycles a texture.
-          gpu::gles2::GLES2Interface* gl = contextGL();
           if (gl)
             gl->ProduceTextureDirectCHROMIUM(
                 0, GL_TEXTURE_2D, releasedMailboxInfo->m_mailbox.name);