Tiling priorities in Android Webview.

android_webview/browser/shared_renderer_state.cc

Index: android_webview/browser/shared_renderer_state.cc
diff --git a/android_webview/browser/shared_renderer_state.cc b/android_webview/browser/shared_renderer_state.cc
index 8845b761cd252c16592d4480003288e53b07de09..c293c4784584c0e3a8db70bcec62008fd9435504 100644
--- a/android_webview/browser/shared_renderer_state.cc
+++ b/android_webview/browser/shared_renderer_state.cc
@@ -7,6 +7,8 @@
 #include "android_webview/browser/browser_view_renderer_client.h"
 #include "base/bind.h"
 #include "base/location.h"
+#include "cc/output/compositor_frame.h"
+#include "content/public/browser/android/synchronous_compositor.h"
 
 namespace android_webview {
 
@@ -51,6 +53,22 @@ void SharedRendererState::ClientRequestDrawGLOnUIThread() {
   }
 }
 
+void SharedRendererState::ClientPostInvalidate() {
+  if (ui_loop_->BelongsToCurrentThread()) {
+    ClientPostInvalidateOnUIThread();
+  } else {
+    ui_loop_->PostTask(
+        FROM_HERE,
+        base::Bind(&SharedRendererState::ClientPostInvalidateOnUIThread,
+                   ui_thread_weak_ptr_));
+  }
+}
+
+void SharedRendererState::ClientPostInvalidateOnUIThread() {
+  DCHECK(ui_loop_->BelongsToCurrentThread());
+  client_on_ui_->PostInvalidate();
+}
+
 void SharedRendererState::SetDrawGLInput(scoped_ptr<DrawGLInput> input) {
   base::AutoLock lock(lock_);
   DCHECK(!draw_gl_input_.get());
@@ -62,6 +80,20 @@ scoped_ptr<DrawGLInput> SharedRendererState::PassDrawGLInput() {
   return draw_gl_input_.Pass();
 }
 
+void SharedRendererState::PostExternalDrawConstraintsToChildCompositor(
+    const ParentCompositorDrawConstraints& parent_draw_constraints) {
+  base::AutoLock lock(lock_);
+  parent_draw_constraints_ = parent_draw_constraints;
+
+  ClientPostInvalidate();
+}
+
+const ParentCompositorDrawConstraints&
+SharedRendererState::ParentDrawConstraints() const {
+  base::AutoLock lock(lock_);
+  return parent_draw_constraints_;
+}
+
 void SharedRendererState::SetHardwareAllowed(bool allowed) {
   base::AutoLock lock(lock_);
   hardware_allowed_ = allowed;