adds docs for osr

atom/browser/api/atom_api_web_contents.cc

@@ -1396,8 +1396,8 @@ void WebContents::OnPaint(
   v8::MaybeLocal<v8::Object> buffer = node::Buffer::New(isolate
     , (char *)bitmap_pixels, sizeof(bitmap_pixels));
 
-  Emit("paint", damage_rect, bitmap_width, bitmap_height,
-       buffer.ToLocalChecked());
+  const gfx::Size bitmap_size = gfx::Size(bitmap_width, bitmap_height);
+  Emit("paint", damage_rect, buffer.ToLocalChecked(), bitmap_size);
 }
 
 void WebContents::StartPainting() {

atom/browser/osr_render_widget_host_view_mac.mm

@@ -4,17 +4,10 @@
 
 #include "atom/browser/osr_render_widget_host_view.h"
 
-#include <algorithm>
-#include <limits>
-#include <utility>
-
 #import <Cocoa/Cocoa.h>
 
-#include "base/compiler_specific.h"
 #include "base/strings/utf_string_conversions.h"
-#include "content/common/view_messages.h"
 #include "ui/accelerated_widget_mac/accelerated_widget_mac.h"
-#include "ui/events/latency_info.h"
 
 ui::AcceleratedWidgetMac* atom::OffScreenRenderWidgetHostView::GetAcceleratedWidgetMac()
     const {

atom/browser/web_contents_preferences.cc

@@ -189,8 +189,6 @@ void WebContentsPreferences::AppendExtraCommandLineSwitches(
 
   command_line->AppendSwitch(cc::switches::kEnableBeginFrameScheduling);
   command_line->AppendSwitch(cc::switches::kShowFPSCounter);
-  // command_line->AppendSwitch("disable-gpu");
-  // command_line->AppendSwitch("disable-gpu-compositing");
 }
 
 // static