Disable CHROMIUM_bind_uniform_location due to a spec bug

src/gpu/gl/GrGLCaps.cpp

Index: src/gpu/gl/GrGLCaps.cpp
diff --git a/src/gpu/gl/GrGLCaps.cpp b/src/gpu/gl/GrGLCaps.cpp
index e1f3e1b0330215adf60948c7eb854f9aa172ef88..ee1f0cb88de16d1ea3e7ba4f14570bcc9e2eac52 100644
--- a/src/gpu/gl/GrGLCaps.cpp
+++ b/src/gpu/gl/GrGLCaps.cpp
@@ -269,7 +269,11 @@ void GrGLCaps::init(const GrContextOptions& contextOptions,
         }
     }
 
+#if 0 // Disabled due to http://skbug.com/4454
     fBindUniformLocationSupport = ctxInfo.hasExtension("GL_CHROMIUM_bind_uniform_location");
+#else
+    fBindUniformLocationSupport = false;
+#endif
 
 #ifdef SK_BUILD_FOR_WIN
     // We're assuming that on Windows Chromium we're using ANGLE.