cc: Split Proxy to eliminate unnecessary dependencies on the impl side

cc/trees/thread_verifier.cc

Index: cc/trees/thread_verifier.cc
diff --git a/cc/trees/proxy.cc b/cc/trees/thread_verifier.cc
similarity index 69%
copy from cc/trees/proxy.cc
copy to cc/trees/thread_verifier.cc
index 58d10b910cbdd2ce1aa8fb10a3cdc3af04531a3a..a689ecb447e2bbab72f4705ad3a762e814e81c38 100644
--- a/cc/trees/proxy.cc
+++ b/cc/trees/thread_verifier.cc
@@ -2,24 +2,25 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "cc/trees/proxy.h"
-
+#include "cc/trees/thread_verifier.h"
 #include "base/single_thread_task_runner.h"
 #include "cc/trees/blocking_task_runner.h"
 
 namespace cc {
 
-base::SingleThreadTaskRunner* Proxy::MainThreadTaskRunner() const {
+base::SingleThreadTaskRunner* ThreadVerifier::MainThreadTaskRunner() const {
   return main_task_runner_.get();
 }
 
-bool Proxy::HasImplThread() const { return !!impl_task_runner_.get(); }
+bool ThreadVerifier::HasImplThread() const {
+  return !!impl_task_runner_.get();
+}
 
-base::SingleThreadTaskRunner* Proxy::ImplThreadTaskRunner() const {
+base::SingleThreadTaskRunner* ThreadVerifier::ImplThreadTaskRunner() const {
   return impl_task_runner_.get();
 }
 
-bool Proxy::IsMainThread() const {
+bool ThreadVerifier::IsMainThread() const {
 #if DCHECK_IS_ON()
   if (impl_thread_is_overridden_)
     return false;
@@ -34,7 +35,7 @@ bool Proxy::IsMainThread() const {
 #endif
 }
 
-bool Proxy::IsImplThread() const {
+bool ThreadVerifier::IsImplThread() const {
 #if DCHECK_IS_ON()
   if (impl_thread_is_overridden_)
     return true;
@@ -47,12 +48,12 @@ bool Proxy::IsImplThread() const {
 }
 
 #if DCHECK_IS_ON()
-void Proxy::SetCurrentThreadIsImplThread(bool is_impl_thread) {
+void ThreadVerifier::SetCurrentThreadIsImplThread(bool is_impl_thread) {
   impl_thread_is_overridden_ = is_impl_thread;
 }
 #endif
 
-bool Proxy::IsMainThreadBlocked() const {
+bool ThreadVerifier::IsMainThreadBlocked() const {
 #if DCHECK_IS_ON()
   return is_main_thread_blocked_;
 #else
@@ -61,13 +62,14 @@ bool Proxy::IsMainThreadBlocked() const {
 }
 
 #if DCHECK_IS_ON()
-void Proxy::SetMainThreadBlocked(bool is_main_thread_blocked) {
+void ThreadVerifier::SetMainThreadBlocked(bool is_main_thread_blocked) {
   is_main_thread_blocked_ = is_main_thread_blocked;
 }
 #endif
 
-Proxy::Proxy(scoped_refptr<base::SingleThreadTaskRunner> main_task_runner,
-             scoped_refptr<base::SingleThreadTaskRunner> impl_task_runner)
+ThreadVerifier::ThreadVerifier(
+    scoped_refptr<base::SingleThreadTaskRunner> main_task_runner,
+    scoped_refptr<base::SingleThreadTaskRunner> impl_task_runner)
 #if !DCHECK_IS_ON()
     : main_task_runner_(main_task_runner),
       impl_task_runner_(impl_task_runner),
@@ -84,7 +86,7 @@ Proxy::Proxy(scoped_refptr<base::SingleThreadTaskRunner> main_task_runner,
 #endif
 }
 
-Proxy::~Proxy() {
+ThreadVerifier::~ThreadVerifier() {
   DCHECK(IsMainThread());
 }