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

content/browser/renderer_host/input/gesture_event_queue.cc

 // Copyright 2014 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/browser/renderer_host/input/gesture_event_queue.h"
 
 #include "base/command_line.h"
 #include "base/debug/trace_event.h"
 #include "base/strings/string_number_conversions.h"
 #include "content/browser/renderer_host/input/input_router.h"
@@ skipping 78 matching lines @@
     case WebInputEvent::GesturePinchUpdate:
       // TODO(rjkroege): Debounce pinch (http://crbug.com/147647)
       return true;
     default:
       if (scrolling_in_progress_) {
         debouncing_deferral_queue_.push_back(gesture_event);
         return false;
       }
       return true;
   }
-
-  NOTREACHED();
-  return false;
 }
 
 // NOTE: The filters are applied successively. This simplifies the change.
 bool GestureEventQueue::ShouldForward(
     const GestureEventWithLatencyInfo& gesture_event) {
   TRACE_EVENT0("input", "GestureEventQueue::ShouldForward");
   return ShouldForwardForZeroVelocityFlingStart(gesture_event) &&
       ShouldForwardForBounceReduction(gesture_event) &&
       ShouldForwardForGFCFiltering(gesture_event) &&
       ShouldForwardForTapSuppression(gesture_event) &&
@@ skipping 31 matching lines @@
           ShouldDeferGestureShowPress(gesture_event);
     case WebInputEvent::GestureTapCancel:
     case WebInputEvent::GestureTap:
     case WebInputEvent::GestureTapUnconfirmed:
     case WebInputEvent::GestureDoubleTap:
       return !touchscreen_tap_suppression_controller_->
           ShouldSuppressGestureTapEnd();
     default:
       return true;
   }
-  NOTREACHED();
-  return false;
 }
 
 bool GestureEventQueue::ShouldForwardForCoalescing(
     const GestureEventWithLatencyInfo& gesture_event) {
   switch (gesture_event.event.type) {
     case WebInputEvent::GestureFlingCancel:
       fling_in_progress_ = false;
       break;
     case WebInputEvent::GestureFlingStart:
       fling_in_progress_ = true;
@@ skipping 205 matching lines @@
 
 void GestureEventQueue::EnqueueEvent(
     const GestureEventWithLatencyInfo& gesture_event) {
   coalesced_gesture_events_.push_back(gesture_event);
   // Scroll and pinch events contributing to |combined_scroll_pinch_| will be
   // manually added to the queue in |MergeOrInsertScrollAndPinchEvent()|.
   combined_scroll_pinch_ = gfx::Transform();
 }
 
 }  // namespace content