aw: Expose record document as public api

content/public/browser/android/synchronous_compositor.h

Index: content/public/browser/android/synchronous_compositor.h
diff --git a/content/public/browser/android/synchronous_compositor.h b/content/public/browser/android/synchronous_compositor.h
index 2bec50fa949874465c82d01315904d50ceacc33e..62485f155f8bc2cd759eb3b69e8b3d5f3ca78dd1 100644
--- a/content/public/browser/android/synchronous_compositor.h
+++ b/content/public/browser/android/synchronous_compositor.h
@@ -64,9 +64,10 @@ class CONTENT_EXPORT SynchronousCompositor {
       scoped_refptr<gpu::InProcessCommandBuffer::Service> service);
 
   // By default, synchronous compopsitor records the full layer, not only
-  // what is inside and around the view port. Call this on start up to revert
-  // to default behavior when synchronous compositor is not used.
-  static void DisableRecordFullLayer();
+  // what is inside and around the view port. This can be used to switch
+  // between this record-full-layer behavior and normal record-around-viewport
+  // behavior.
+  static void SetRecordFullDocument(bool record_full_document);
 
   // Synchronously initialize compositor for hardware draw. Can only be called
   // while compositor is in software only mode, either after compositor is