Remove fallback tick software draw.

android_webview/browser/browser_view_renderer.h

Index: android_webview/browser/browser_view_renderer.h
diff --git a/android_webview/browser/browser_view_renderer.h b/android_webview/browser/browser_view_renderer.h
index 21c28c8f97da3ef4ad14aef6cfa08917f44ece72..afaecbcdeca96c532c87266e985e36cd1daefe14 100644
--- a/android_webview/browser/browser_view_renderer.h
+++ b/android_webview/browser/browser_view_renderer.h
@@ -120,11 +120,6 @@ class BrowserViewRenderer : public content::SynchronousCompositorClient {
  private:
   void SetTotalRootLayerScrollOffset(const gfx::Vector2dF& new_value_dip);
   bool CanOnDraw();
-  // Posts an invalidate with fallback tick. All invalidates posted while an
-  // invalidate is pending will be posted as a single invalidate after the
-  // pending invalidate is done.
-  void PostInvalidateWithFallback();
-  void CancelFallbackTick();
   void UpdateCompositorIsActive();
   bool CompositeSW(SkCanvas* canvas);
   scoped_refptr<base::trace_event::ConvertableToTraceFormat>
@@ -142,11 +137,6 @@ class BrowserViewRenderer : public content::SynchronousCompositorClient {
   void PostFallbackTick();
   void FallbackTickFired();
 
-  // Force invoke the compositor to run produce a 1x1 software frame that is
-  // immediately discarded. This is a hack to force invoke parts of the
-  // compositor that are not directly exposed here.
-  void ForceFakeCompositeSW();
-
   gfx::Vector2d max_scroll_offset() const;
 
   void UpdateMemoryPolicy();
@@ -179,10 +169,6 @@ class BrowserViewRenderer : public content::SynchronousCompositorClient {
   gfx::Vector2d last_on_draw_scroll_offset_;
   gfx::Rect last_on_draw_global_visible_rect_;
 
-  base::CancelableClosure post_fallback_tick_;
-  base::CancelableClosure fallback_tick_fired_;
-  bool fallback_tick_pending_;
-
   gfx::Size size_;
 
   gfx::SizeF scrollable_size_dip_;