Fix "unreachable code" warnings (MSVC warning 4702) in chrome/browser/.

chrome/browser/media/chrome_webrtc_apprtc_browsertest.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 "base/command_line.h"
 #include "base/path_service.h"
 #include "base/process/launch.h"
 #include "base/rand_util.h"
 #include "base/strings/stringprintf.h"
 #include "base/win/windows_version.h"
@@ skipping 165 matching lines @@
       return false;
     }
 
     CommandLine command_line(firefox_launcher);
     command_line.AppendSwitchPath("--binary", firefox_binary);
     command_line.AppendSwitchASCII("--webpage", url.spec());
 
     VLOG(1) << "Running " << command_line.GetCommandLineString();
     return base::LaunchProcess(command_line, base::LaunchOptions(),
                                &firefox_);
-
-    return true;
   }
 
  private:
   base::ProcessHandle dev_appserver_;
   base::ProcessHandle firefox_;
 };
 
 IN_PROC_BROWSER_TEST_F(WebRtcApprtcBrowserTest, MANUAL_WorksOnApprtc) {
   // TODO(mcasas): Remove Win version filtering when this bug gets fixed:
   // http://code.google.com/p/webrtc/issues/detail?id=2703
@@ skipping 45 matching lines @@
                                           base::RandInt(0, 65536)));
   content::WebContents* chrome_tab = OpenPageAndAcceptUserMedia(room_url);
 
   ASSERT_TRUE(LaunchFirefoxWithUrl(room_url));
 
   ASSERT_TRUE(WaitForCallToComeUp(chrome_tab));
 
   // Ensure Firefox manages to send video our way.
   ASSERT_TRUE(DetectRemoteVideoPlaying(chrome_tab));
 }