android webview: allow cc to fail hardware draw

content/browser/android/in_process/synchronous_compositor_output_surface.cc

Index: content/browser/android/in_process/synchronous_compositor_output_surface.cc
diff --git a/content/browser/android/in_process/synchronous_compositor_output_surface.cc b/content/browser/android/in_process/synchronous_compositor_output_surface.cc
index f03f992d83d4a289296527d774ef66aa65783037..753390b5818b5f7abb89a9c217cf47fa7818d4fe 100644
--- a/content/browser/android/in_process/synchronous_compositor_output_surface.cc
+++ b/content/browser/android/in_process/synchronous_compositor_output_surface.cc
@@ -74,7 +74,6 @@ SynchronousCompositorOutputSurface::SynchronousCompositorOutputSurface(
       current_sw_canvas_(nullptr),
       memory_policy_(0),
       frame_swap_message_queue_(frame_swap_message_queue) {
-  capabilities_.draw_and_swap_full_viewport_every_frame = true;
   capabilities_.adjust_deadline_for_parent = false;
   capabilities_.delegated_rendering = true;
   capabilities_.max_frames_pending = 1;
@@ -213,7 +212,9 @@ void SynchronousCompositorOutputSurface::InvokeComposite(
                              viewport_rect_for_tile_priority,
                              transform_for_tile_priority,
                              !hardware_draw);
-  SetNeedsRedrawRect(gfx::Rect(viewport.size()));
+  if (!hardware_draw) {
+    SetNeedsRedrawRect(gfx::Rect(viewport.size()));
+  }
 
   client_->OnDraw();