Add --dump-line-box-trees parameter to content_shell.

content/shell/browser/shell_content_browser_client.cc

 // Copyright 2013 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/browser/shell_content_browser_client.h"
 
 #include "base/base_switches.h"
 #include "base/command_line.h"
 #include "base/files/file.h"
 #include "base/files/file_util.h"
@@ skipping 211 matching lines @@
 #endif  // OS_POSIX && !OS_MACOSX
 }
 
 void ShellContentBrowserClient::AppendExtraCommandLineSwitches(
     base::CommandLine* command_line,
     int child_process_id) {
   if (base::CommandLine::ForCurrentProcess()->HasSwitch(
           switches::kRunLayoutTest))
     command_line->AppendSwitch(switches::kRunLayoutTest);
   if (base::CommandLine::ForCurrentProcess()->HasSwitch(
+          switches::kDumpLineBoxTrees))

[Mike West, 2015/06/12 07:27:22]

Style nit: All of these multi-line `if` statements need brackets. I don't know
why they don't; since you're here, would you mind either fixing them in this
patch, or submitting a separate patch to add `{}`?

+    command_line->AppendSwitch(switches::kDumpLineBoxTrees);
+  if (base::CommandLine::ForCurrentProcess()->HasSwitch(
           switches::kEnableFontAntialiasing))
     command_line->AppendSwitch(switches::kEnableFontAntialiasing);
   if (base::CommandLine::ForCurrentProcess()->HasSwitch(
           switches::kExposeInternalsForTesting))
     command_line->AppendSwitch(switches::kExposeInternalsForTesting);
   if (base::CommandLine::ForCurrentProcess()->HasSwitch(
           switches::kExposeIpcEcho))
     command_line->AppendSwitch(switches::kExposeIpcEcho);
   if (base::CommandLine::ForCurrentProcess()->HasSwitch(
           switches::kStableReleaseMode))
@@ skipping 191 matching lines @@
 ShellBrowserContext*
 ShellContentBrowserClient::ShellBrowserContextForBrowserContext(
     BrowserContext* content_browser_context) {
   if (content_browser_context == browser_context())
     return browser_context();
   DCHECK_EQ(content_browser_context, off_the_record_browser_context());
   return off_the_record_browser_context();
 }
 
 }  // namespace content