[Android WebView] Migrate the rendering code to a separate set of classes.

android_webview/lib/main/aw_main_delegate.cc

Index: android_webview/lib/main/aw_main_delegate.cc
diff --git a/android_webview/lib/main/aw_main_delegate.cc b/android_webview/lib/main/aw_main_delegate.cc
index 5c6399bb3f4499a399315aa372a9a1b633a7c6b2..2a8954fc0524c584175f779900c20158c8be490a 100644
--- a/android_webview/lib/main/aw_main_delegate.cc
+++ b/android_webview/lib/main/aw_main_delegate.cc
@@ -31,15 +31,6 @@ bool AwMainDelegate::BasicStartupComplete(int* exit_code) {
   // Set the command line to enable synchronous API compatibility.
   command_line->AppendSwitch(switches::kEnableWebViewSynchronousAPIs);
 
-  // TODO(leandrogracia): enable with the CapturePicture API support.
-  if (false) {
-    // Enable impl-side painting in the compositor.
-    command_line->AppendSwitch(switches::kForceCompositingMode);
-    command_line->AppendSwitch(switches::kEnableThreadedCompositing);
-    command_line->AppendSwitch(switches::kEnableDeferredImageDecoding);
-    command_line->AppendSwitch(cc::switches::kEnableImplSidePainting);
-  }
-
   return false;
 }