[wrapper-tracing] WebGL and friends: Add write barriers

third_party/WebKit/Source/modules/webgl/WebGL2RenderingContextBase.cpp

Index: third_party/WebKit/Source/modules/webgl/WebGL2RenderingContextBase.cpp
diff --git a/third_party/WebKit/Source/modules/webgl/WebGL2RenderingContextBase.cpp b/third_party/WebKit/Source/modules/webgl/WebGL2RenderingContextBase.cpp
index 42ae0f174622aa2c845a3c5aef464ceef23194ae..7770ea6409f2d0356bcfc5d663b7569261ffab92 100644
--- a/third_party/WebKit/Source/modules/webgl/WebGL2RenderingContextBase.cpp
+++ b/third_party/WebKit/Source/modules/webgl/WebGL2RenderingContextBase.cpp
@@ -227,7 +227,17 @@ WebGL2RenderingContextBase::WebGL2RenderingContextBase(
     : WebGLRenderingContextBase(passedCanvas,
                                 std::move(contextProvider),
                                 requestedAttributes,
-                                2) {
+                                2),
+      m_readFramebufferBinding(this, nullptr),
+      m_transformFeedbackBinding(this, nullptr),
+      m_boundCopyReadBuffer(this, nullptr),
+      m_boundCopyWriteBuffer(this, nullptr),
+      m_boundPixelPackBuffer(this, nullptr),
+      m_boundPixelUnpackBuffer(this, nullptr),
+      m_boundTransformFeedbackBuffer(this, nullptr),
+      m_boundUniformBuffer(this, nullptr),
+      m_currentBooleanOcclusionQuery(this, nullptr),
+      m_currentTransformFeedbackPrimitivesWrittenQuery(this, nullptr) {
   m_supportedInternalFormatsStorage.insert(
       kSupportedInternalFormatsStorage,
       kSupportedInternalFormatsStorage +
@@ -2849,7 +2859,7 @@ void WebGL2RenderingContextBase::bindSampler(GLuint unit,
     return;
   }
 
-  m_samplerUnits[unit] = sampler;
+  m_samplerUnits[unit] = TraceWrapperMember<WebGLSampler>(this, sampler);
 
   contextGL()->BindSampler(unit, objectOrZero(sampler));
 }
@@ -4042,7 +4052,8 @@ bool WebGL2RenderingContextBase::validateAndUpdateBufferBindBaseTarget(
         synthesizeGLError(GL_INVALID_VALUE, functionName, "index out of range");
         return false;
       }
-      m_boundIndexedTransformFeedbackBuffers[index] = buffer;
+      m_boundIndexedTransformFeedbackBuffers[index] =
+          TraceWrapperMember<WebGLBuffer>(this, buffer);
       m_boundTransformFeedbackBuffer = buffer;
       break;
     case GL_UNIFORM_BUFFER:
@@ -4050,7 +4061,8 @@ bool WebGL2RenderingContextBase::validateAndUpdateBufferBindBaseTarget(
         synthesizeGLError(GL_INVALID_VALUE, functionName, "index out of range");
         return false;
       }
-      m_boundIndexedUniformBuffers[index] = buffer;
+      m_boundIndexedUniformBuffers[index] =
+          TraceWrapperMember<WebGLBuffer>(this, buffer);
       m_boundUniformBuffer = buffer;
 
       // Keep track of what the maximum bound uniform buffer index is