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 077cf18b520048cf450611476f2d44877a2d392c..92ab6d809f0e592df6e2f6c515fc7e6e42317c5b 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 +30,36 @@ scoped_ptr<OutputSurface> FakeLayerImplTreeHostClient::createOutputSurface()
     return FakeOutputSurface::Create3d(TestWebGraphicsContext3D::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 = TestWebGraphicsContext3D::Create(attrs).PassAs<WebKit::WebGraphicsContext3D>();
+    return m_offscreenContext3d.get();
+}
+
+GrContext* FakeLayerImplTreeHostClient::OffscreenGrContextForMainThread()
+{
+    return OffscreenGrContextForCompositorThread();
+}
+
+GrContext* FakeLayerImplTreeHostClient::OffscreenGrContextForCompositorThread()
+{
+    // TODO(danakj): Make a FakeGrContext.
+    return NULL;
+}
+
+void FakeLayerImplTreeHostClient::DestroyOffscreenContext3dForCompositorThread() {
+    // TODO(danakj): Kill the GrContext.
+    m_offscreenContext3d.reset();
+}
+
 scoped_ptr<InputHandler> FakeLayerImplTreeHostClient::createInputHandler()
 {
     return scoped_ptr<InputHandler>();