Compile end2end tests on Linux

BUG=angleproject:892

Change-Id: If3903f1801f4999bebaaaed2625346bfbec2243d
Reviewed-on: https://chromium-review.googlesource.com/270199
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Tested-by: Corentin Wallez <cwallez@chromium.org>
diff --git a/src/tests/gl_tests/PbufferTest.cpp b/src/tests/gl_tests/PbufferTest.cpp
index 0f8ea61..5a085f1 100644
--- a/src/tests/gl_tests/PbufferTest.cpp
+++ b/src/tests/gl_tests/PbufferTest.cpp
@@ -71,8 +71,8 @@
 
         const EGLint pBufferAttributes[] =
         {
-            EGL_WIDTH, mPbufferSize,
-            EGL_HEIGHT, mPbufferSize,
+            EGL_WIDTH, static_cast<EGLint>(mPbufferSize),
+            EGL_HEIGHT, static_cast<EGLint>(mPbufferSize),
             EGL_TEXTURE_FORMAT, mSupportsBindTexImage ? EGL_TEXTURE_RGBA : EGL_NO_TEXTURE,
             EGL_TEXTURE_TARGET, mSupportsBindTexImage ? EGL_TEXTURE_2D : EGL_NO_TEXTURE,
             EGL_NONE, EGL_NONE,