Add option --dump-render-tree to content_shell to dump the render tree as text.

content/shell/shell.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 "content/shell/shell.h"
 
 #include "base/message_loop.h"
 #include "base/path_service.h"
 #include "base/string_util.h"
+#include "content/browser/renderer_host/render_view_host.h"
 #include "content/browser/tab_contents/navigation_controller_impl.h"
 #include "content/browser/tab_contents/tab_contents.h"
+#include "content/shell/shell_messages.h"
 #include "ui/gfx/size.h"
 
 // Content area size for newly created windows.
 static const int kTestWindowWidth = 800;
 static const int kTestWindowHeight = 600;
 
 namespace content {
 
 std::vector<Shell*> Shell::windows_;
 
@@ skipping 74 matching lines @@
 
 void Shell::UpdateNavigationControls() {
   int current_index = tab_contents_->GetController().GetCurrentEntryIndex();
   int max_index = tab_contents_->GetController().GetEntryCount() - 1;
 
   PlatformEnableUIControl(BACK_BUTTON, current_index > 0);
   PlatformEnableUIControl(FORWARD_BUTTON, current_index < max_index);
   PlatformEnableUIControl(STOP_BUTTON, tab_contents_->IsLoading());
 }
 
+void Shell::SetDumpAsText(bool dump_as_text) {
+  dump_as_text_ = dump_as_text;
+}
+
 gfx::NativeView Shell::GetContentView() {
   if (!tab_contents_.get())
     return NULL;
   return tab_contents_->GetNativeView();
 }
 
 void Shell::LoadingStateChanged(WebContents* source) {
   UpdateNavigationControls();
   PlatformSetIsLoading(source->IsLoading());
 }
 
+void Shell::DidFinishLoad(WebContents* source) {
+  if (!dump_as_text_)
+    return;
+  RenderViewHost* render_view_host = source->GetRenderViewHost();
+  render_view_host->Send(
+      new ShellViewMsg_CaptureTextDump(render_view_host->routing_id(), false));
+}
+
 void Shell::WebContentsCreated(WebContents* source_contents,
                                int64 source_frame_id,
                                const GURL& target_url,
                                WebContents* new_contents) {
   CreateShell(static_cast<TabContents*>(new_contents));
 }
 
 void Shell::DidNavigateMainFramePostCommit(WebContents* tab) {
   PlatformSetAddressBarURL(tab->GetURL());
 }
 
 void Shell::UpdatePreferredSize(WebContents* source,
                                 const gfx::Size& pref_size) {
   PlatformSizeTo(pref_size.width(), pref_size.height());
 }
 
 }  // namespace content