Disable timestamps in WebGL.

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

Index: third_party/WebKit/Source/modules/webgl/WebGLTimerQueryEXT.cpp
diff --git a/third_party/WebKit/Source/modules/webgl/WebGLTimerQueryEXT.cpp b/third_party/WebKit/Source/modules/webgl/WebGLTimerQueryEXT.cpp
index 8f7073ddfb7bd0577d1ef021b46c903c7951b251..3a4c093ab2718c0ec9a6e318f77aaa0bfaead07f 100644
--- a/third_party/WebKit/Source/modules/webgl/WebGLTimerQueryEXT.cpp
+++ b/third_party/WebKit/Source/modules/webgl/WebGLTimerQueryEXT.cpp
@@ -57,6 +57,13 @@ void WebGLTimerQueryEXT::updateCachedResult(gpu::gles2::GLES2Interface* gl)
     if (!hasTarget())
         return;
 
+    // If this is a timestamp query, set the result to 0 and make it available as we don't support timestamps in WebGL due to very poor driver support for them
+    if (m_target == GL_TIMESTAMP_EXT) {
+        m_queryResult = 0;
+        m_queryResultAvailable = true;
+        return;
+    }
+
     // We can only update the cached result when control returns to the browser.
     m_canUpdateAvailability = false;
     GLuint available = 0;