Removed common_includes.h reordered includes.

Since we are not using precompiled headers anymore, remove common_includes.h
so that fewer files are included in cpp files.

Reordered includes to be in the following order:
 1) Local ANGLE project headers, ordered by directory in descending depth
 2) GL headers
 3) STL headers
This helps enforce the include-what-you-use principal by reducing the
number of STL headers unexpectedly shared between files.

This include order conflicts with some of the Google c++ style guide
which states that STL includes should be first but this helps us catch
more issues.

Change-Id: I8f7785f4ad574e253dd3c7b4fb1e54d3ce3b99fc
Reviewed-on: https://chromium-review.googlesource.com/214850
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Tested-by: Geoff Lang <geofflang@chromium.org>
diff --git a/src/libGLESv2/Shader.cpp b/src/libGLESv2/Shader.cpp
index 4e92c5a..1b4b09c 100644
--- a/src/libGLESv2/Shader.cpp
+++ b/src/libGLESv2/Shader.cpp
@@ -8,16 +8,18 @@
 // VertexShader and FragmentShader. Implements GL shader objects and related
 // functionality. [OpenGL ES 2.0.24] section 2.10 page 24 and section 3.8 page 84.
 
-#include "libGLESv2/common_includes.h"
 #include "libGLESv2/Shader.h"
-
-#include "GLSLANG/ShaderLang.h"
-#include "common/utilities.h"
 #include "libGLESv2/renderer/Renderer.h"
 #include "libGLESv2/renderer/ShaderImpl.h"
 #include "libGLESv2/Constants.h"
 #include "libGLESv2/ResourceManager.h"
 
+#include "common/utilities.h"
+
+#include "GLSLANG/ShaderLang.h"
+
+#include <sstream>
+
 namespace gl
 {