Fix the linear-rgb canvas color space so that it renders

third_party/WebKit/Source/core/html/canvas/CanvasRenderingContext.cpp

Index: third_party/WebKit/Source/core/html/canvas/CanvasRenderingContext.cpp
diff --git a/third_party/WebKit/Source/core/html/canvas/CanvasRenderingContext.cpp b/third_party/WebKit/Source/core/html/canvas/CanvasRenderingContext.cpp
index a17e8958c228a943000422b26292fa962a16ed0d..ed37a3c9af1b568acf7fdfdf549ccf67c76e96fe 100644
--- a/third_party/WebKit/Source/core/html/canvas/CanvasRenderingContext.cpp
+++ b/third_party/WebKit/Source/core/html/canvas/CanvasRenderingContext.cpp
@@ -89,6 +89,15 @@ sk_sp<SkColorSpace> CanvasRenderingContext::skColorSpace() const {
   return nullptr;
 }
 
+SkColorType CanvasRenderingContext::colorType() const {
+  switch (m_colorSpace) {
+    case kLinearRGBCanvasColorSpace:
+      return kRGBA_F16_SkColorType;
+    default:
+      return kN32_SkColorType;
+  }
+}
+
 void CanvasRenderingContext::dispose() {
   // HTMLCanvasElement and CanvasRenderingContext have a circular reference.
   // When the pair is no longer reachable, their destruction order is non-