Encapulate the ESSL compiler into a GL object that is per-context.

 * Allows for multiple contexts have to have different client versions, caps
   and extensions without causing shader compilation failures.

BUG=angle:823

Change-Id: I523679e90be031b0b7fa385d46d6839b1cf3029f
Reviewed-on: https://chromium-review.googlesource.com/227710
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Tested-by: Geoff Lang <geofflang@chromium.org>
diff --git a/src/libANGLE/ResourceManager.cpp b/src/libANGLE/ResourceManager.cpp
index 3ed77f1..299958c 100644
--- a/src/libANGLE/ResourceManager.cpp
+++ b/src/libANGLE/ResourceManager.cpp
@@ -94,7 +94,7 @@
 
     if (type == GL_VERTEX_SHADER || type == GL_FRAGMENT_SHADER)
     {
-        mShaderMap[handle] = new Shader(this, mRenderer->createShader(data, type), type, handle);
+        mShaderMap[handle] = new Shader(this, mRenderer->createShader(type), type, handle);
     }
     else UNREACHABLE();