cc: Route offscreen context creation for compositor to the browser.

cc/test/fake_layer_tree_host_client.cc

Index: cc/test/fake_layer_tree_host_client.cc
diff --git a/cc/test/fake_layer_tree_host_client.cc b/cc/test/fake_layer_tree_host_client.cc
index f7d9ac01f6c36f808ffcfb8f79269f686cdcc265..7d11ddc67627c0efeef9b561fb00c9abe1099d8a 100644
--- a/cc/test/fake_layer_tree_host_client.cc
+++ b/cc/test/fake_layer_tree_host_client.cc
@@ -6,6 +6,14 @@
 
 namespace cc {
 
+FakeLayerImplTreeHostClient::FakeLayerImplTreeHostClient(bool useSoftwareRendering, bool useDelegatingRenderer)
+    : m_useSoftwareRendering(useSoftwareRendering)
+    , m_useDelegatingRenderer(useDelegatingRenderer)
+{
+}
+
+FakeLayerImplTreeHostClient::~FakeLayerImplTreeHostClient() { }
+
 scoped_ptr<OutputSurface> FakeLayerImplTreeHostClient::createOutputSurface()
 {
     if (m_useSoftwareRendering) {
@@ -22,6 +30,21 @@ scoped_ptr<OutputSurface> FakeLayerImplTreeHostClient::createOutputSurface()
     return FakeOutputSurface::Create3d(FakeWebGraphicsContext3D::Create(attrs).PassAs<WebKit::WebGraphicsContext3D>()).PassAs<OutputSurface>();
 }
 
+WebKit::WebGraphicsContext3D* FakeLayerImplTreeHostClient::OffscreenContext3dForMainThread()
+{
+    return OffscreenContext3dForCompositorThread();
+}
+
+WebKit::WebGraphicsContext3D* FakeLayerImplTreeHostClient::OffscreenContext3dForCompositorThread()
+{
+    if (m_offscreenContext3d)
+        return m_offscreenContext3d.get();
+
+    WebKit::WebGraphicsContext3D::Attributes attrs;
+    m_offscreenContext3d = FakeWebGraphicsContext3D::Create(attrs).PassAs<WebKit::WebGraphicsContext3D>();
+    return m_offscreenContext3d.get();
+}
+
 scoped_ptr<InputHandler> FakeLayerImplTreeHostClient::createInputHandler()
 {
     return scoped_ptr<InputHandler>();