Expose Blimp dependencies to the embedder

blimp/client/app/compositor/browser_compositor.h

Index: blimp/client/app/compositor/browser_compositor.h
diff --git a/blimp/client/app/compositor/browser_compositor.h b/blimp/client/app/compositor/browser_compositor.h
index 707d062ba575d8051b2a3400e7b5de8ab90d2612..ae0ee3b70a56f1e1dbf97802b9f8e8cdf07ef1d5 100644
--- a/blimp/client/app/compositor/browser_compositor.h
+++ b/blimp/client/app/compositor/browser_compositor.h
@@ -7,6 +7,7 @@
 
 #include "base/macros.h"
 #include "base/callback.h"
+#include "base/memory/weak_ptr.h"
 #include "cc/trees/layer_tree_host_client.h"
 #include "cc/trees/layer_tree_host_single_thread_client.h"
 #include "ui/gfx/geometry/size.h"
@@ -22,20 +23,14 @@ class SurfaceManager;
 
 namespace blimp {
 namespace client {
-class BlimpGpuMemoryBufferManager;
+class CompositorDependencies;
 
 // The parent compositor that embeds the content from the BlimpCompositor for
 // the current page.
 class BrowserCompositor : public cc::LayerTreeHostClient,
                           public cc::LayerTreeHostSingleThreadClient {
  public:
-  // TODO(dtrainor): Move these to the CompositorDeps and share them with the
-  // BlimpCompositor.
-  static cc::SurfaceManager* GetSurfaceManager();
-  static BlimpGpuMemoryBufferManager* GetGpuMemoryBufferManager();
-  static uint32_t AllocateSurfaceClientId();
-
-  BrowserCompositor();
+  explicit BrowserCompositor(CompositorDependencies* compositor_dependencies);
   ~BrowserCompositor() override;
 
   // Sets the layer with the content from the renderer compositor.
@@ -50,6 +45,11 @@ class BrowserCompositor : public cc::LayerTreeHostClient,
   // used to draw to the screen.
   void SetAcceleratedWidget(gfx::AcceleratedWidget widget);
 
+  // Called when the a ContextProvider has been created by the
+  // CompositorDependencies class.  If |host_| is waiting on an OutputSurface
+  // this will build one for it.
+  void OnContextProviderCreated(scoped_refptr<cc::ContextProvider> provider);
+
   // A callback to get notifed when the compositor performs a successful swap.
   void set_did_complete_swap_buffers_callback(base::Closure callback) {
     did_complete_swap_buffers_ = callback;
@@ -80,7 +80,7 @@ class BrowserCompositor : public cc::LayerTreeHostClient,
   void DidPostSwapBuffers() override {}
   void DidAbortSwapBuffers() override {}
 
-  void HandlePendingOutputSurfaceRequest();
+  CompositorDependencies* compositor_dependencies_;
 
   std::unique_ptr<cc::SurfaceIdAllocator> surface_id_allocator_;
   gfx::AcceleratedWidget widget_;
@@ -94,6 +94,8 @@ class BrowserCompositor : public cc::LayerTreeHostClient,
 
   base::Closure did_complete_swap_buffers_;
 
+  base::WeakPtrFactory<BrowserCompositor> weak_ptr_factory_;
+
   DISALLOW_COPY_AND_ASSIGN(BrowserCompositor);
 };