Revert of html_viewer: Add DevToolsAgentImpl.

components/html_viewer/html_document.cc

Index: components/html_viewer/html_document.cc
diff --git a/components/html_viewer/html_document.cc b/components/html_viewer/html_document.cc
index e03bad9830f8a54cf69c55073aae0d7ad822ee25..62ef9cb3e661b6ccd25c467a1196d7bafe9c9159 100644
--- a/components/html_viewer/html_document.cc
+++ b/components/html_viewer/html_document.cc
@@ -14,7 +14,6 @@
 #include "base/thread_task_runner_handle.h"
 #include "components/html_viewer/blink_input_events_type_converters.h"
 #include "components/html_viewer/blink_url_request_type_converters.h"
-#include "components/html_viewer/devtools_agent_impl.h"
 #include "components/html_viewer/media_factory.h"
 #include "components/html_viewer/setup.h"
 #include "components/html_viewer/web_layer_tree_view_impl.h"
@@ -222,13 +221,8 @@
   touch_handler_.reset(new TouchHandler(web_view_));
   web_layer_tree_view_impl_->set_widget(web_view_);
   ConfigureSettings(web_view_->settings());
-
-  blink::WebLocalFrame* main_frame =
-      blink::WebLocalFrame::create(blink::WebTreeScopeType::Document, this);
-  web_view_->setMainFrame(main_frame);
-
-  devtools_agent_.reset(
-      new DevToolsAgentImpl(main_frame, html_document_app_->shell()));
+  web_view_->setMainFrame(
+      blink::WebLocalFrame::create(blink::WebTreeScopeType::Document, this));
 
   GURL url(response->url);
 
@@ -341,9 +335,6 @@
 void HTMLDocument::frameDetached(blink::WebFrame* frame) {
   if (frame->parent())
     frame->parent()->removeChild(frame);
-
-  if (devtools_agent_ && frame == devtools_agent_->frame())
-    devtools_agent_.reset();
 
   // |frame| is invalid after here.
   frame->close();