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

content/shell/renderer/test_runner/TestPlugin.cpp

 // 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/renderer/test_runner/TestPlugin.h"
 
 #include "base/basictypes.h"
 #include "base/bind.h"
 #include "base/logging.h"
 #include "base/memory/shared_memory.h"
@@ skipping 65 matching lines @@
         return "Released";
     case WebTouchPoint::StatePressed:
         return "Pressed";
     case WebTouchPoint::StateMoved:
         return "Moved";
     case WebTouchPoint::StateCancelled:
         return "Cancelled";
     default:
         return "Unknown";
     }
-
-    BLINK_ASSERT_NOT_REACHED();
-    return 0;
 }
 
 void printTouchList(WebTestDelegate* delegate, const WebTouchPoint* points, int length)
 {
     for (int i = 0; i < length; ++i) {
         char buffer[100];
         snprintf(buffer, sizeof(buffer), "* %d, %d: %s\n", static_cast<int>(points[i].position.x), static_cast<int>(points[i].position.y), pointState(points[i].state));
         delegate->printMessage(buffer);
     }
 }
@@ skipping 591 matching lines @@
 }
 
 bool TestPlugin::isSupportedMimeType(const WebString& mimeType)
 {
     return mimeType == TestPlugin::mimeType()
            || mimeType == pluginPersistsMimeType()
            || mimeType == canCreateWithoutRendererMimeType();
 }
 
 }