Compositing Layer update for OffscreenCanvas resize

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

Index: third_party/WebKit/Source/platform/graphics/OffscreenCanvasFrameDispatcherImpl.cpp
diff --git a/third_party/WebKit/Source/platform/graphics/OffscreenCanvasFrameDispatcherImpl.cpp b/third_party/WebKit/Source/platform/graphics/OffscreenCanvasFrameDispatcherImpl.cpp
index c9ae4ea51ed5a5bba2e665270fa785d9440b1d21..ca177a5d5a16bcc96934aee601bcf0e57cd5cb7c 100644
--- a/third_party/WebKit/Source/platform/graphics/OffscreenCanvasFrameDispatcherImpl.cpp
+++ b/third_party/WebKit/Source/platform/graphics/OffscreenCanvasFrameDispatcherImpl.cpp
@@ -34,15 +34,11 @@ OffscreenCanvasFrameDispatcherImpl::OffscreenCanvasFrameDispatcherImpl(
     uint64_t nonceHigh,
     uint64_t nonceLow,
     int canvasId,
-    int width,
-    int height)
-    : m_surfaceId(
-          cc::FrameSinkId(clientId, sinkId),
-          cc::LocalFrameId(
-              localId,
-              base::UnguessableToken::Deserialize(nonceHigh, nonceLow))),
-      m_width(width),
-      m_height(height),
+    unsigned width,
+    unsigned height)
+    : m_frameSinkId(cc::FrameSinkId(clientId, sinkId)),
+      m_width(clampTo<int>(width)),
+      m_height(clampTo<int>(height)),
       m_nextResourceId(1u),
       m_binding(this),
       m_placeholderCanvasId(canvasId) {
@@ -50,7 +46,12 @@ OffscreenCanvasFrameDispatcherImpl::OffscreenCanvasFrameDispatcherImpl(
   mojom::blink::OffscreenCanvasCompositorFrameSinkProviderPtr provider;
   Platform::current()->interfaceProvider()->getInterface(
       mojo::GetProxy(&provider));
-  provider->CreateCompositorFrameSink(m_surfaceId,
+  cc::SurfaceId surfaceId(
+      m_frameSinkId,
+      cc::LocalFrameId(
+          localId, base::UnguessableToken::Deserialize(nonceHigh, nonceLow)));
+
+  provider->CreateCompositorFrameSink(surfaceId,
                                       m_binding.CreateInterfacePtrAndBind(),
                                       mojo::GetProxy(&m_sink));
 }
@@ -401,4 +402,10 @@ bool OffscreenCanvasFrameDispatcherImpl::verifyImageSize(
   return false;
 }
 
+void OffscreenCanvasFrameDispatcherImpl::reshape(unsigned width,
+                                                 unsigned height) {
+  m_width = clampTo<int>(width);
+  m_height = clampTo<int>(height);
+}
+
 }  // namespace blink