Fix media timeline so that thumb never exceeds buffered data

media/base/composite_filter.cc

Index: media/base/composite_filter.cc
diff --git a/media/base/composite_filter.cc b/media/base/composite_filter.cc
index 5089815b33a1e93ee86655a506b3b2dcbbba9da7..235a810fab2835b5e0f52d6be3324f279afe09dc 100644
--- a/media/base/composite_filter.cc
+++ b/media/base/composite_filter.cc
@@ -21,7 +21,6 @@ class CompositeFilter::FilterHostImpl : public FilterHost {
   virtual void SetError(PipelineStatus error) OVERRIDE;
   virtual base::TimeDelta GetTime() const OVERRIDE;
   virtual base::TimeDelta GetDuration() const OVERRIDE;
-  virtual void SetTime(base::TimeDelta time) OVERRIDE;
   virtual void SetNaturalVideoSize(const gfx::Size& size) OVERRIDE;
   virtual void NotifyEnded() OVERRIDE;
   virtual void DisableAudioRenderer() OVERRIDE;
@@ -486,10 +485,6 @@ base::TimeDelta CompositeFilter::FilterHostImpl::GetDuration() const {
   return host_->GetDuration();
 }
 
-void CompositeFilter::FilterHostImpl::SetTime(base::TimeDelta time) {
-  host_->SetTime(time);
-}
-
 void CompositeFilter::FilterHostImpl::SetNaturalVideoSize(
     const gfx::Size& size) {
   host_->SetNaturalVideoSize(size);