Remove unnecessary check if RenderFrame::GetWebFrame() returns null.

android_webview/renderer/aw_render_view_ext.cc

Index: android_webview/renderer/aw_render_view_ext.cc
diff --git a/android_webview/renderer/aw_render_view_ext.cc b/android_webview/renderer/aw_render_view_ext.cc
index 75bf580820834c30b184e992b01990334668367b..add2084d80326c4c289c88a49f385f6760e71a6a 100644
--- a/android_webview/renderer/aw_render_view_ext.cc
+++ b/android_webview/renderer/aw_render_view_ext.cc
@@ -56,11 +56,7 @@ void AwRenderViewExt::CheckContentsSize() {
   if (!webview || !main_render_frame)
     return;
 
-  gfx::Size contents_size;
-
-  blink::WebLocalFrame* main_frame = main_render_frame->GetWebFrame();
-  if (main_frame)
-    contents_size = main_frame->ContentsSize();
+  gfx::Size contents_size = main_render_frame->GetWebFrame()->ContentsSize();
 
   // Fall back to contentsPreferredMinimumSize if the mainFrame is reporting a
   // 0x0 size (this happens during initial load).