[DevTools] Initialize WebContents size at the start to speed-up loading.

chrome/browser/devtools/devtools_window.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/devtools/devtools_window.h"
 
 #include <algorithm>
 
 #include "base/json/json_reader.h"
 #include "base/metrics/histogram.h"
@@ skipping 704 matching lines @@
   ZoomController::CreateForWebContents(main_web_contents_);
   ZoomController::FromWebContents(main_web_contents_)
       ->SetShowsNotificationBubble(false);
 
   g_instances.Get().push_back(this);
 
   // There is no inspected_rvh in case of shared workers.
   if (inspected_rvh)
     inspected_contents_observer_.reset(new ObserverWithAccessor(
         content::WebContents::FromRenderViewHost(inspected_rvh)));
+
+  // Initialize docked page to be of the right size.
+  WebContents* inspected_web_contents = GetInspectedWebContents();
+  if (can_dock_ && inspected_web_contents) {
+    content::RenderWidgetHostView* inspected_view =
+        inspected_web_contents->GetRenderWidgetHostView();
+    if (inspected_view && main_web_contents_->GetRenderWidgetHostView()) {
+      gfx::Size size = inspected_view->GetViewBounds().size();
+      main_web_contents_->GetRenderWidgetHostView()->SetSize(size);
+    }
+  }
+
   event_forwarder_.reset(new DevToolsEventForwarder(this));
 }
 
 // static
 DevToolsWindow* DevToolsWindow::Create(
     Profile* profile,
     const GURL& frontend_url,
     content::RenderViewHost* inspected_rvh,
     bool shared_worker_frontend,
     bool external_frontend,
@@ skipping 111 matching lines @@
 void DevToolsWindow::AddNewContents(WebContents* source,
                                     WebContents* new_contents,
                                     WindowOpenDisposition disposition,
                                     const gfx::Rect& initial_pos,
                                     bool user_gesture,
                                     bool* was_blocked) {
   if (new_contents == toolbox_web_contents_) {
     toolbox_web_contents_->SetDelegate(
         new DevToolsToolboxDelegate(toolbox_web_contents_,
                                     inspected_contents_observer_.get()));
-    gfx::Size size = main_web_contents_->GetViewBounds().size();
-    if (toolbox_web_contents_->GetRenderWidgetHostView())
+    if (main_web_contents_->GetRenderWidgetHostView() &&
+        toolbox_web_contents_->GetRenderWidgetHostView()) {
+      gfx::Size size =
+          main_web_contents_->GetRenderWidgetHostView()->GetViewBounds().size();
       toolbox_web_contents_->GetRenderWidgetHostView()->SetSize(size);
+    }
     UpdateBrowserWindow();
     return;
   }
 
   WebContents* inspected_web_contents = GetInspectedWebContents();
   if (inspected_web_contents) {
     inspected_web_contents->GetDelegate()->AddNewContents(
         source, new_contents, disposition, initial_pos, user_gesture,
         was_blocked);
   }
@@ skipping 397 matching lines @@
       closure.Run();
     return;
   }
   load_completed_callback_ = closure;
 }
 
 bool DevToolsWindow::ForwardKeyboardEvent(
     const content::NativeWebKeyboardEvent& event) {
   return event_forwarder_->ForwardEvent(event);
 }