sync compositor: Remove begin frame source

content/common/android/sync_compositor_messages.cc

Index: content/common/android/sync_compositor_messages.cc
diff --git a/content/common/android/sync_compositor_messages.cc b/content/common/android/sync_compositor_messages.cc
index 7a2e4c1d23045c5ec4e78fda79cfc92b5ee9f5bc..f9be4b274ff60d0a1151439137144f4b8b157043 100644
--- a/content/common/android/sync_compositor_messages.cc
+++ b/content/common/android/sync_compositor_messages.cc
@@ -6,11 +6,6 @@
 
 namespace content {
 
-SyncCompositorCommonBrowserParams::SyncCompositorCommonBrowserParams()
-    : begin_frame_source_paused(false) {}
-
-SyncCompositorCommonBrowserParams::~SyncCompositorCommonBrowserParams() {}
-
 SyncCompositorDemandDrawHwParams::SyncCompositorDemandDrawHwParams() {}
 
 SyncCompositorDemandDrawHwParams::SyncCompositorDemandDrawHwParams(
@@ -43,7 +38,6 @@ SyncCompositorCommonRendererParams::SyncCompositorCommonRendererParams()
       max_page_scale_factor(0.f),
       need_animate_scroll(false),
       need_invalidate_count(0u),
-      need_begin_frame(false),
       did_activate_pending_tree_count(0u) {}
 
 SyncCompositorCommonRendererParams::~SyncCompositorCommonRendererParams() {}