toggle FPS counter in compositor

cc/layer_tree_host_impl.cc

 // Copyright 2011 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 "config.h"
 
 #include "CCLayerTreeHostImpl.h"
 
 #include "base/basictypes.h"
 #include "CCAppendQuadsData.h"
@@ skipping 214 matching lines @@
     , m_contentsTexturesPurged(false)
     , m_memoryAllocationLimitBytes(CCPrioritizedTextureManager::defaultMemoryAllocationLimit())
     , m_backgroundColor(0)
     , m_hasTransparentBackground(false)
     , m_needsAnimateLayers(false)
     , m_pinchGestureActive(false)
     , m_fpsCounter(CCFrameRateCounter::create())
     , m_debugRectHistory(CCDebugRectHistory::create())
     , m_numImplThreadScrolls(0)
     , m_numMainThreadScrolls(0)
+    , m_showFPSCounter(false)
 {
     ASSERT(CCProxy::isImplThread());
     didVisibilityChange(this, m_visible);
 }
 
 CCLayerTreeHostImpl::~CCLayerTreeHostImpl()
 {
     ASSERT(CCProxy::isImplThread());
     TRACE_EVENT0("cc", "CCLayerTreeHostImpl::~CCLayerTreeHostImpl()");
 
@@ skipping 1207 matching lines @@
         return;
 
     CCScrollbarAnimationController* scrollbarController = layer->scrollbarAnimationController();
     if (scrollbarController && scrollbarController->animate(monotonicTime))
         m_client->setNeedsRedrawOnImplThread();
 
     for (size_t i = 0; i < layer->children().size(); ++i)
         animateScrollbarsRecursive(layer->children()[i], monotonicTime);
 }
 
+void CCLayerTreeHostImpl::setShowFPSCounter(bool show)

[nduca, 2012/10/20 19:49:41]

Can this be state on the hud layer? e.g this function just says
  hudLayer()->setShowFPSCounter(show)

+{
+    ASSERT(CCProxy::isImplThread());
+    m_showFPSCounter = show;
+}
+
+bool CCLayerTreeHostImpl::showFPSCounter() const
+{
+    return m_showFPSCounter;
+}
+
 }  // namespace cc