A speculative Revert for r165872 - Remove static thread pointers from CC, attempt 2

cc/single_thread_proxy.cc

Index: cc/single_thread_proxy.cc
===================================================================
--- cc/single_thread_proxy.cc	(revision 165906)
+++ cc/single_thread_proxy.cc	(working copy)
@@ -11,7 +11,6 @@
 #include "cc/graphics_context.h"
 #include "cc/layer_tree_host.h"
 #include "cc/resource_update_controller.h"
-#include "cc/thread.h"
 
 namespace cc {
 
@@ -21,8 +20,7 @@
 }
 
 SingleThreadProxy::SingleThreadProxy(LayerTreeHost* layerTreeHost)
-    : Proxy(scoped_ptr<Thread>(NULL))
-    , m_layerTreeHost(layerTreeHost)
+    : m_layerTreeHost(layerTreeHost)
     , m_contextLost(false)
     , m_rendererInitialized(false)
     , m_nextFrameIsNewlyCommittedFrame(false)
@@ -34,7 +32,7 @@
 
 void SingleThreadProxy::start()
 {
-    DebugScopedSetImplThread impl(this);
+    DebugScopedSetImplThread impl;
     m_layerTreeHostImpl = m_layerTreeHost->createLayerTreeHostImpl(this);
 }
 
@@ -73,7 +71,7 @@
 {
     DCHECK(Proxy::isMainThread());
     {
-        DebugScopedSetImplThread impl(this);
+        DebugScopedSetImplThread impl;
         m_layerTreeHostImpl->finishAllRendering();
     }
 }
@@ -101,7 +99,7 @@
 
 void SingleThreadProxy::setVisible(bool visible)
 {
-    DebugScopedSetImplThread impl(this);
+    DebugScopedSetImplThread impl;
     m_layerTreeHostImpl->setVisible(visible);
 }
 
@@ -110,7 +108,7 @@
     DCHECK(Proxy::isMainThread());
     DCHECK(m_contextBeforeInitialization.get());
     {
-        DebugScopedSetImplThread impl(this);
+        DebugScopedSetImplThread impl;
         bool ok = m_layerTreeHostImpl->initializeRenderer(m_contextBeforeInitialization.Pass());
         if (ok) {
             m_rendererInitialized = true;
@@ -133,8 +131,8 @@
 
     bool initialized;
     {
-        DebugScopedSetMainThreadBlocked mainThreadBlocked(this);
-        DebugScopedSetImplThread impl(this);
+        DebugScopedSetMainThreadBlocked mainThreadBlocked;
+        DebugScopedSetImplThread impl;
         if (!m_layerTreeHostImpl->contentsTexturesPurged())
             m_layerTreeHost->deleteContentsTexturesOnImplThread(m_layerTreeHostImpl->resourceProvider());
         initialized = m_layerTreeHostImpl->initializeRenderer(context.Pass());
@@ -181,8 +179,8 @@
     DCHECK(Proxy::isMainThread());
     // Commit immediately
     {
-        DebugScopedSetMainThreadBlocked mainThreadBlocked(this);
-        DebugScopedSetImplThread impl(this);
+        DebugScopedSetMainThreadBlocked mainThreadBlocked;
+        DebugScopedSetImplThread impl;
 
         base::TimeTicks startTime = base::TimeTicks::HighResNow();
         m_layerTreeHostImpl->beginCommit();
@@ -195,8 +193,7 @@
                 NULL,
                 Proxy::mainThread(),
                 queue.Pass(),
-                m_layerTreeHostImpl->resourceProvider(),
-                hasImplThread());
+                m_layerTreeHostImpl->resourceProvider());
         updateController->finalize();
 
         m_layerTreeHost->finishCommitOnImplThread(m_layerTreeHostImpl.get());
@@ -257,8 +254,8 @@
     TRACE_EVENT0("cc", "SingleThreadProxy::stop");
     DCHECK(Proxy::isMainThread());
     {
-        DebugScopedSetMainThreadBlocked mainThreadBlocked(this);
-        DebugScopedSetImplThread impl(this);
+        DebugScopedSetMainThreadBlocked mainThreadBlocked;
+        DebugScopedSetImplThread impl;
 
         if (!m_layerTreeHostImpl->contentsTexturesPurged())
             m_layerTreeHost->deleteContentsTexturesOnImplThread(m_layerTreeHostImpl->resourceProvider());
@@ -280,7 +277,7 @@
 void SingleThreadProxy::postAnimationEventsToMainThreadOnImplThread(scoped_ptr<AnimationEventsVector> events, base::Time wallClockTime)
 {
     DCHECK(Proxy::isImplThread());
-    DebugScopedSetMainThread main(this);
+    DebugScopedSetMainThread main;
     m_layerTreeHost->setAnimationEvents(events.Pass(), wallClockTime);
 }
 
@@ -321,7 +318,7 @@
 void SingleThreadProxy::forceSerializeOnSwapBuffers()
 {
     {
-        DebugScopedSetImplThread impl(this);
+        DebugScopedSetImplThread impl;
         if (m_rendererInitialized)
             m_layerTreeHostImpl->renderer()->doNoOp();
     }
@@ -342,7 +339,7 @@
     // Unlink any texture backings that were deleted
     PrioritizedTextureManager::BackingList evictedContentsTexturesBackings;
     {
-        DebugScopedSetImplThread impl(this);
+        DebugScopedSetImplThread implThread;
         m_layerTreeHost->contentsTextureManager()->getEvictedBackings(evictedContentsTexturesBackings);
     }
     m_layerTreeHost->contentsTextureManager()->unlinkEvictedBackings(evictedContentsTexturesBackings);
@@ -364,7 +361,7 @@
 {
     DCHECK(!m_contextLost);
     {
-        DebugScopedSetImplThread impl(this);
+        DebugScopedSetImplThread impl;
 
         if (!m_layerTreeHostImpl->visible())
             return false;