Fix the WebGLObject arg non-nullable behaviors.

third_party/WebKit/Source/modules/webgl/EXTDisjointTimerQuery.cpp

 // Copyright 2015 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 "modules/webgl/EXTDisjointTimerQuery.h"
 
 #include "bindings/modules/v8/WebGLAny.h"
 #include "gpu/command_buffer/client/gles2_interface.h"
 #include "modules/webgl/WebGLRenderingContextBase.h"
 #include "modules/webgl/WebGLTimerQueryEXT.h"
@@ skipping 50 matching lines @@
 
   return scoped.context()->contextGL()->IsQueryEXT(query->object());
 }
 
 void EXTDisjointTimerQuery::beginQueryEXT(GLenum target,
                                           WebGLTimerQueryEXT* query) {
   WebGLExtensionScopedContext scoped(this);
   if (scoped.isLost())
     return;
 
-  if (!query || query->isDeleted() || !query->validate(0, scoped.context())) {
+  DCHECK(query);
+  if (query->isDeleted() || !query->validate(0, scoped.context())) {
     scoped.context()->synthesizeGLError(GL_INVALID_OPERATION, "beginQueryEXT",
                                         "invalid query");
     return;
   }
 
   if (target != GL_TIME_ELAPSED_EXT) {
     scoped.context()->synthesizeGLError(GL_INVALID_ENUM, "beginQueryEXT",
                                         "invalid target");
     return;
   }
@@ skipping 36 matching lines @@
   m_currentElapsedQuery->resetCachedResult();
   m_currentElapsedQuery.clear();
 }
 
 void EXTDisjointTimerQuery::queryCounterEXT(WebGLTimerQueryEXT* query,
                                             GLenum target) {
   WebGLExtensionScopedContext scoped(this);
   if (scoped.isLost())
     return;
 
-  if (!query || query->isDeleted() || !query->validate(0, scoped.context())) {
+  DCHECK(query);
+  if (query->isDeleted() || !query->validate(0, scoped.context())) {
     scoped.context()->synthesizeGLError(GL_INVALID_OPERATION, "queryCounterEXT",
                                         "invalid query");
     return;
   }
 
   if (target != GL_TIMESTAMP_EXT) {
     scoped.context()->synthesizeGLError(GL_INVALID_ENUM, "queryCounterEXT",
                                         "invalid target");
     return;
   }
@@ skipping 42 matching lines @@
   return ScriptValue::createNull(scriptState);
 }
 
 ScriptValue EXTDisjointTimerQuery::getQueryObjectEXT(ScriptState* scriptState,
                                                      WebGLTimerQueryEXT* query,
                                                      GLenum pname) {
   WebGLExtensionScopedContext scoped(this);
   if (scoped.isLost())
     return ScriptValue::createNull(scriptState);
 
-  if (!query || query->isDeleted() || !query->validate(0, scoped.context()) ||
+  DCHECK(query);
+  if (query->isDeleted() || !query->validate(0, scoped.context()) ||
       m_currentElapsedQuery == query) {
     scoped.context()->synthesizeGLError(GL_INVALID_OPERATION,
                                         "getQueryObjectEXT", "invalid query");
     return ScriptValue::createNull(scriptState);
   }
 
   switch (pname) {
     case GL_QUERY_RESULT_EXT: {
       query->updateCachedResult(scoped.context()->contextGL());
       return WebGLAny(scriptState, query->getQueryResult());
@@ skipping 16 matching lines @@
   WebGLExtension::trace(visitor);
 }
 
 EXTDisjointTimerQuery::EXTDisjointTimerQuery(WebGLRenderingContextBase* context)
     : WebGLExtension(context) {
   context->extensionsUtil()->ensureExtensionEnabled(
       "GL_EXT_disjoint_timer_query");
 }
 
 }  // namespace blink